H3K27ac and TE overlap

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Last updated: 2026-02-17

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---

library(tidyverse)
library(GenomicRanges)
library(plyranges)
library(genomation)
library(readr)
library(rtracklayer)
library(stringr)
library(ggrepel)
library(DT)
library(ChIPseeker)
library(ggVennDiagram)
library(smplot2)
library(ggsignif)

First steps: breakdown repeatmasker into groups and pull out the ones by each class I am interested in.

repeatmasker <- read_delim("data/Other_paper_data/repeatmasker_20250911.txt", 
    delim = "\t", escape_double = FALSE, 
    trim_ws = TRUE)
colnames(repeatmasker)

 [1] "#bin"      "swScore"   "milliDiv"  "milliDel"  "milliIns"  "genoName" 
 [7] "genoStart" "genoEnd"   "genoLeft"  "strand"    "repName"   "repClass" 
[13] "repFamily" "repStart"  "repEnd"    "repLeft"   "id"       

autosomes <- paste0("chr", 1:22)
repeatmasker_clean <- repeatmasker %>% mutate(
    strand = ifelse(strand == "C", "-", "+")
  ) %>% 
   mutate(
    start = genoStart + 1,
    end   = genoEnd)%>% 
  mutate(repFamily= str_remove(repFamily, "\\?$")) %>% 
  dplyr::filter(genoName %in% autosomes) %>% 
  mutate(RM_id=paste0(genoName,":",start,"-",end,":",id))


rpt_split <- split(repeatmasker_clean, repeatmasker_clean$repClass)

rpt_split_gr_list <- lapply(rpt_split, function(df) {
  GRanges(
    seqnames = df$genoName,
    ranges   = IRanges(start = df$start, end = df$end),
    strand   = df$strand,
    repName   = df$repName,
    repClass  = df$repClass,
    repFamily = df$repFamily,
    swScore   = df$swScore,
    milliDiv  = df$milliDiv,
    milliDel  = df$milliDel,
    milliIns  = df$milliIns,
    RM_id        = df$RM_id
  )
})

SINE_gr <- rpt_split_gr_list$SINE
SINE_df <- SINE_gr %>% 
  as.data.frame()

SINE_split_df <- split(SINE_df, SINE_df$repFamily)

LINE_gr <- rpt_split_gr_list$LINE
LINE_df <- LINE_gr %>% 
  as.data.frame()

LINE_split_df <- split(LINE_df, LINE_df$repFamily)

LTR_gr <- rpt_split_gr_list$LTR
LTR_df <- LTR_gr %>% 
  as.data.frame()

LTR_split_df <- split(LTR_df, LTR_df$repFamily)

SVA_gr <- rpt_split_gr_list$Retroposon
SVA_df <- SVA_gr %>% 
  as.data.frame()

SVA_split_df <- split(SVA_df, SVA_df$repFamily)

DNA_gr <- rpt_split_gr_list$DNA
DNA_df <- DNA_gr %>% 
  as.data.frame()

DNA_split_df <- split(DNA_df, DNA_df$repFamily)

H3K27ac_summit_gr <- readRDS("data/RDS_files/H3K27ac_complete_summit_gr.RDS")


peakAnnoList_H3K27ac <- readRDS("data/motif_lists/H3K27ac_annotated_peaks.RDS")
peakAnnoList_H3K9me3 <- readRDS("data/motif_lists/H3K9me3_annotated_peaks.RDS")

H3K27ac_lookup <- imap_dfr(peakAnnoList_H3K27ac[1:3], ~
  tibble(Peakid = .x@anno$Peakid, cluster = .y))

H3K9me3_lookup <- imap_dfr(peakAnnoList_H3K9me3[1:3], ~
  tibble(Peakid = .x@anno$Peakid, cluster = .y))

H3K27ac_sets_gr <- lapply(peakAnnoList_H3K27ac, function(df) {
  as_granges(df)
})

H3K9me3_sets_gr <- lapply(peakAnnoList_H3K9me3, function(df) {
  as_granges(df)
})

##assigning Peakid as name of summit region
 mcols(H3K27ac_summit_gr)$name <- mcols(H3K27ac_summit_gr)$Peakid
 
 comparisons <- tibble(
  cluster2 = c("Set_2", "Set_3"),
  cluster1 = c("Set_1", "Set_1")
)

H3K9me3_toplist <- readRDS( "data/DER_data/H3K9me3_toplist_nooutlier.RDS")

H3K27ac_toplist <- readRDS( "data/DER_data/H3K27ac_toplist.RDS")

H3K27ac_toptable_list <- bind_rows(H3K27ac_toplist, .id = "group")

H3K9me3_toptable_list <- bind_rows(H3K9me3_toplist, .id = "group")

K9me3_lfctable <- H3K9me3_toptable_list %>% 
  dplyr::select(group,genes, logFC) %>% 
  pivot_wider(.,id_cols = genes, names_from = group, values_from = logFC) %>%
  dplyr::left_join(H3K9me3_lookup, by =c("genes"="Peakid")) %>% 
  mutate(case= case_when(H3K9me3_24T > 0 & H3K9me3_24R >0 & H3K9me3_144R>0~"A",
                              H3K9me3_24T < 0 & H3K9me3_24R <0 & H3K9me3_144R<0~"B",
                              TRUE ~ "C")) %>% 
  mutate(set_case=paste0(cluster,"_",case))

K27ac_lfctable <- H3K27ac_toptable_list %>% 
  dplyr::select(group,genes, logFC) %>% 
  pivot_wider(.,id_cols = genes, names_from = group, values_from = logFC) %>% 
  dplyr::left_join(H3K27ac_lookup,by =c("genes"="Peakid")) %>% 
  mutate(case= case_when(H3K27ac_24T > 0 & H3K27ac_24R >0 & H3K27ac_144R>0~"A",
                              H3K27ac_24T < 0 & H3K27ac_24R <0 & H3K27ac_144R<0~"B",
                              TRUE ~ "C")) %>% 
  mutate(set_case=paste0(cluster,"_",case))

set_case_list_H3K27ac <-  H3K27ac_toptable_list %>% 
  dplyr::select(group,genes, logFC) %>% 
  pivot_wider(.,id_cols = genes, names_from = group, values_from = logFC) %>% 
  dplyr::left_join(H3K27ac_lookup,by =c("genes"="Peakid")) %>% 
  mutate(case= case_when(H3K27ac_24T > 0 & H3K27ac_24R >0 & H3K27ac_144R>0~"A",
                              H3K27ac_24T < 0 & H3K27ac_24R <0 & H3K27ac_144R<0~"B",
                              TRUE ~ "C")) %>% 
  mutate(set_case=paste0(cluster,"_",case)) %>% 
  dplyr::select(genes, cluster,case,set_case)

cluster_colors <- c("Set_1" = "#d93e40","Set_2" = "#1c9f50","Set_3" = "#3570b3","NA"  ="grey70")

# Generic pairwise Fisher test
test_pair_TE_generic <- function(df_long, te_name, cluster1, cluster2) {
  
   sub_df <- df_long %>%
    filter(TE_type == te_name) %>%
    complete(
      cluster = c(cluster1, cluster2),
      status  = c("TE", "not_TE"),
      fill = list(count = 0))
   
   # enforce fixed order
 status_levels <- c("TE", "not_TE")
  
  # assume "status" column has TE vs wnot_TE automatically
  statuses <- unique(sub_df$status)
  
  if(length(statuses) != 2) {
    # ensure we have exactly two categories, fill missing with 0
    sub_df <- sub_df %>%
      complete(cluster, status, fill = list(count = 0))
    statuses <- unique(sub_df$status)
  }
  
  # extract counts for cluster1
  c1_counts <- sub_df %>%
    filter(cluster == cluster1) %>%
   arrange(factor(status, levels = status_levels)) %>%  # ensure same order
    pull(count)
  
  # extract counts for cluster2
  c2_counts <- sub_df %>%
    filter(cluster == cluster2) %>%
    arrange(factor(status, levels = status_levels)) %>%
    pull(count)
  
  # build 2x2 matrix
  mat <- matrix(
    c(c2_counts, c1_counts),
    nrow = 2,
    byrow = TRUE,
    dimnames = list(
      cluster = c(cluster2, cluster1),
      category = status_levels
    )
  )
  
  ft <- tryCatch(
    fisher.test(mat, workspace = 2e8),
    error = function(e) fisher.test(mat, simulate.p.value = TRUE, B = 1e5)
  )
  
  tibble(
    TE_type     = te_name,
    comparison  = paste(cluster2, "vs", cluster1),
    odds_ratio  = ft$estimate,
    lower_CI    = ft$conf.int[1],
    upper_CI    = ft$conf.int[2],
    p_value     = ft$p.value
  )
}

SINE

Overlapping SINE family with ROIs

sine_hits <- findOverlaps(H3K27ac_sets_gr$all_H3K27ac, SINE_gr, ignore.strand = TRUE)

SINE_overlap_df <- tibble(
  peak_row = queryHits(sine_hits),
  Peakid   = H3K27ac_sets_gr$all_H3K27ac$Peakid[queryHits(sine_hits)],
  cluster  = H3K27ac_sets_gr$all_H3K27ac$cluster[queryHits(sine_hits)],
  
  
  repClass = SINE_gr$repClass[subjectHits(sine_hits)],
  repName  = SINE_gr$repName[subjectHits(sine_hits)],
  
  TE_type  = ifelse(
    SINE_gr$repFamily[subjectHits(sine_hits)] == "SVA",
    SINE_gr$repName[subjectHits(sine_hits)],
    SINE_gr$repFamily[subjectHits(sine_hits)]
  ),
  
  milliDiv = SINE_gr$milliDiv[subjectHits(sine_hits)],
  milliDel = SINE_gr$milliDel[subjectHits(sine_hits)],
  milliIns = SINE_gr$milliIns[subjectHits(sine_hits)]
)

SINE_overlap_df %>% 
  dplyr::left_join(H3K27ac_lookup) %>% 
  dplyr::filter(cluster %in% c("Set_1","Set_2","Set_3")) %>% 
  ggplot(., aes(x = TE_type, y = milliDiv)) +
   geom_violin(trim = FALSE) +
   geom_boxplot(width = 0.15, outlier.shape = NA) +
   coord_flip() +
   labs(
     y = "Divergence from consensus (milliDiv)",
     x = "TE family",
     title = "Age distribution of SINE elements overlapping H3K27ac"
   )+
  facet_wrap(~cluster)

Past versions of "SINE Overlapping-1.png"

Version	Author	Date
68a0095	reneeisnowhere	2026-02-02

SINE_overlap_df %>% 
  dplyr::left_join(H3K27ac_lookup) %>% 
  dplyr::filter(cluster %in% c("Set_1","Set_2","Set_3")) %>% 
  ggplot(., aes(x = cluster, y = milliDiv)) +
  geom_violin(trim = FALSE) +
   geom_boxplot(width = 0.15, outlier.shape = NA) +
   coord_flip() +
   labs(
     y = "Divergence from consensus (milliDiv)",
     x = "TE family",
     title = "Age distribution of SINE elements overlapping H3K27ac"
   )+
  facet_wrap(~repName)

Past versions of "SINE Overlapping 2-1.png"

Version	Author	Date
68a0095	reneeisnowhere	2026-02-02

LINE

Overlapping LINE family with ROIs

LINE_hits <- findOverlaps(H3K27ac_sets_gr$all_H3K27ac, LINE_gr, ignore.strand = TRUE)

LINE_overlap_df <- tibble(
  peak_row = queryHits(LINE_hits),
  Peakid   = H3K27ac_sets_gr$all_H3K27ac$Peakid[queryHits(LINE_hits)],
  cluster  = H3K27ac_sets_gr$all_H3K27ac$cluster[queryHits(LINE_hits)],
  
  repClass = LINE_gr$repClass[subjectHits(LINE_hits)],
  repName  = LINE_gr$repName[subjectHits(LINE_hits)],
  
  TE_type  = ifelse(
    LINE_gr$repFamily[subjectHits(LINE_hits)] == "SVA",
    LINE_gr$repName[subjectHits(LINE_hits)],
    LINE_gr$repFamily[subjectHits(LINE_hits)]
  ),
  
  milliDiv = LINE_gr$milliDiv[subjectHits(LINE_hits)],
  milliDel = LINE_gr$milliDel[subjectHits(LINE_hits)],
  milliIns = LINE_gr$milliIns[subjectHits(LINE_hits)]
)

LINE_overlap_df %>% 
  dplyr::left_join(H3K27ac_lookup) %>% 
  dplyr::filter(cluster %in% c("Set_1","Set_2","Set_3")) %>% 
  ggplot(., aes(x = TE_type, y = milliDiv)) +
   geom_violin(trim = FALSE) +
   geom_boxplot(width = 0.15, outlier.shape = NA) +
   coord_flip() +
   labs(
     y = "Divergence from consensus (milliDiv)",
     x = "TE family",
     title = "Age distribution of LINE elements overlapping H3K27ac"
   )+
  facet_wrap(~cluster)

Past versions of "LINE Overlapping-1.png"

Version	Author	Date
68a0095	reneeisnowhere	2026-02-02

LTR

Overlapping LTR family with ROIs

LTR_hits <- findOverlaps(H3K27ac_sets_gr$all_H3K27ac, LTR_gr, ignore.strand = TRUE)

LTR_overlap_df <- tibble(
  peak_row = queryHits(LTR_hits),
  Peakid   = H3K27ac_sets_gr$all_H3K27ac$Peakid[queryHits(LTR_hits)],
  cluster  = H3K27ac_sets_gr$all_H3K27ac$cluster[queryHits(LTR_hits)],
  
  repClass = LTR_gr$repClass[subjectHits(LTR_hits)],
  repName  = LTR_gr$repName[subjectHits(LTR_hits)],
  RM_id  = LTR_gr$RM_id[subjectHits(LTR_hits)],
  TE_type  = ifelse(
    LTR_gr$repFamily[subjectHits(LTR_hits)] == "SVA",
    LTR_gr$repName[subjectHits(LTR_hits)],
    LTR_gr$repFamily[subjectHits(LTR_hits)]
  ),
  
  milliDiv = LTR_gr$milliDiv[subjectHits(LTR_hits)],
  milliDel = LTR_gr$milliDel[subjectHits(LTR_hits)],
  milliIns = LTR_gr$milliIns[subjectHits(LTR_hits)]
)

LTR_overlap_df %>% 
  dplyr::left_join(H3K27ac_lookup) %>% 
  dplyr::filter(cluster %in% c("Set_1","Set_2","Set_3")) %>% 
  ggplot(., aes(x = cluster, y = milliDiv)) +
   geom_violin(trim = FALSE) +
   geom_boxplot(width = 0.15, outlier.shape = NA) +
   coord_flip() +
   labs(
     y = "Divergence from consensus (milliDiv)",
     x = "TE family",
     title = "Age distribution of LTR elements overlapping H3K27ac"
   )+
  facet_wrap(~TE_type)

Past versions of "LTR Overlapping-1.png"

Version	Author	Date
81af285	reneeisnowhere	2026-02-04
68a0095	reneeisnowhere	2026-02-02

# saveRDS(LTR_overlap_df,"data/RDS_files/H3K27ac_Full_ROI_overlap_LTRs.RDS")

age tests

First test, within each TE family (ERVL, ERVK, etc…)do Set1,Set2 and Set3 differ?

age_kw <- LTR_overlap_df %>% 
  left_join(H3K27ac_lookup) %>% 
  filter(cluster %in% c("Set_1","Set_2","Set_3")) %>% 
  group_by(TE_type) %>% 
  summarise(
    kw_p = kruskal.test(milliDiv ~ cluster)$p.value)

age_kw

# A tibble: 6 × 2
  TE_type     kw_p
  <chr>      <dbl>
1 ERV1      0.0681
2 ERVK      0.945 
3 ERVL      0.0290
4 ERVL-MaLR 0.0223
5 Gypsy     0.211 
6 LTR       0.0482

The answer shows for ERVL, ERVL-MaLR, and LTR, yes age difference differ between sets. now to look at ERVL,ERVL-MaLR and LTR individually

test_TE_age_pairs <- function(df,
                              TE_type_query,
                              sets = c("Set_1", "Set_2", "Set_3")) {

  sub_df <- df %>% 
    dplyr::left_join(H3K27ac_lookup) %>% 
    dplyr::filter(
      TE_type == TE_type_query,
      cluster %in% sets,
      !is.na(milliDiv)
    )

  # Medians first (ground truth)
  med_df <- sub_df %>% 
    dplyr::group_by(cluster) %>% 
    dplyr::summarise(
      median_age = median(milliDiv, na.rm = TRUE),
      n = dplyr::n(),
      .groups = "drop"
    )

  # Pairwise Wilcoxon
  pw <- pairwise.wilcox.test(
    x = sub_df$milliDiv,
    g = sub_df$cluster,
    p.adjust.method = "BH"
  )

  # Tidy + enforce symmetric pairs
  pw_df <- as.data.frame(as.table(pw$p.value)) %>% 
    dplyr::filter(!is.na(Freq)) %>% 
    dplyr::rename(
      set_A = Var1,
      set_B = Var2,
      p_adj = Freq
    )

  # Join medians *by value*, not position
  pw_df %>% 
    dplyr::left_join(med_df, by = c("set_A" = "cluster")) %>% 
    dplyr::rename(median_A = median_age, n_A = n) %>% 
    dplyr::left_join(med_df, by = c("set_B" = "cluster")) %>% 
    dplyr::rename(median_B = median_age, n_B = n) %>% 
    dplyr::mutate(
      older_set = dplyr::case_when(
        median_A > median_B ~ set_A,
        median_B > median_A ~ set_B,
        TRUE ~ "equal"
      ),
      TE_type = TE_type_query
    )
}

test_TE_age_pairs(LTR_overlap_df, "ERV1")

  set_A set_B      p_adj median_A n_A median_B  n_B older_set TE_type
1 Set_2 Set_1 0.09778575      165 107      157 6385     Set_2    ERV1
2 Set_3 Set_1 0.33055165      160 642      157 6385     Set_3    ERV1
3 Set_3 Set_2 0.14838385      160 642      165  107     Set_2    ERV1

test_TE_age_pairs(LTR_overlap_df, "ERVK")

  set_A set_B p_adj median_A n_A median_B n_B older_set TE_type
1 Set_2 Set_1     1       77   4       90 537     Set_1    ERVK
2 Set_3 Set_1     1       93  25       90 537     Set_3    ERVK
3 Set_3 Set_2     1       93  25       77   4     Set_3    ERVK

test_TE_age_pairs(LTR_overlap_df, "ERVL")

  set_A set_B      p_adj median_A n_A median_B  n_B older_set TE_type
1 Set_2 Set_1 0.42714314      251  91      242 6318     Set_2    ERVL
2 Set_3 Set_1 0.04056578      250 504      242 6318     Set_3    ERVL
3 Set_3 Set_2 0.99418468      250 504      251   91     Set_2    ERVL

test_TE_age_pairs(LTR_overlap_df, "ERVL-MaLR")

  set_A set_B      p_adj median_A n_A median_B   n_B older_set   TE_type
1 Set_2 Set_1 0.17332708      239 197      227 10698     Set_2 ERVL-MaLR
2 Set_3 Set_1 0.06074938      235 945      227 10698     Set_3 ERVL-MaLR
3 Set_3 Set_2 0.60549175      235 945      239   197     Set_2 ERVL-MaLR

test_TE_age_pairs(LTR_overlap_df, "LTR")

  set_A set_B      p_adj median_A n_A median_B n_B older_set TE_type
1 Set_2 Set_1 0.56351607    278.5   4    264.0  92     Set_2     LTR
2 Set_3 Set_1 0.04873491    282.0  13    264.0  92     Set_3     LTR
3 Set_3 Set_2 0.46137897    282.0  13    278.5   4     Set_3     LTR

DNA

Overlapping DNA family with ROIs

DNA_hits <- findOverlaps(H3K27ac_sets_gr$all_H3K27ac, DNA_gr, ignore.strand = TRUE)

DNA_overlap_df <- tibble(
  peak_row = queryHits(DNA_hits),
  Peakid   = H3K27ac_sets_gr$all_H3K27ac$Peakid[queryHits(DNA_hits)],
  cluster  = H3K27ac_sets_gr$all_H3K27ac$cluster[queryHits(DNA_hits)],
  
  repClass = DNA_gr$repClass[subjectHits(DNA_hits)],
  repName  = DNA_gr$repName[subjectHits(DNA_hits)],
  
  TE_type  = ifelse(
    DNA_gr$repFamily[subjectHits(DNA_hits)] == "SVA",
    DNA_gr$repName[subjectHits(DNA_hits)],
    DNA_gr$repFamily[subjectHits(DNA_hits)]
  ),
  
  milliDiv = DNA_gr$milliDiv[subjectHits(DNA_hits)],
  milliDel = DNA_gr$milliDel[subjectHits(DNA_hits)],
  milliIns = DNA_gr$milliIns[subjectHits(DNA_hits)]
)

DNA_overlap_df %>% 
  dplyr::left_join(H3K27ac_lookup) %>% 
  dplyr::filter(cluster %in% c("Set_1","Set_2","Set_3")) %>% 
  ggplot(., aes(x = TE_type, y = milliDiv)) +
   geom_violin(trim = FALSE) +
   geom_boxplot(width = 0.15, outlier.shape = NA) +
   coord_flip() +
   labs(
     y = "Divergence from consensus (milliDiv)",
     x = "TE family",
     title = "Age distribution of DNA elements overlapping H3K27ac"
   )+
  facet_wrap(~cluster)

Past versions of "DNA Overlapping-1.png"

Version	Author	Date
68a0095	reneeisnowhere	2026-02-02

SVA/Retroposon

Overlapping SVA family with ROIs

SVA_hits <- findOverlaps(H3K27ac_sets_gr$all_H3K27ac, SVA_gr, ignore.strand = TRUE)

SVA_overlap_df <- tibble(
  peak_row = queryHits(SVA_hits),
  Peakid   = H3K27ac_sets_gr$all_H3K27ac$Peakid[queryHits(SVA_hits)],
  cluster  = H3K27ac_sets_gr$all_H3K27ac$cluster[queryHits(SVA_hits)],
  
  repClass = SVA_gr$repClass[subjectHits(SVA_hits)],
  repName  = SVA_gr$repName[subjectHits(SVA_hits)],
  
  TE_type  = ifelse(
    SVA_gr$repFamily[subjectHits(SVA_hits)] == "SVA",
    SVA_gr$repName[subjectHits(SVA_hits)],
    SVA_gr$repFamily[subjectHits(SVA_hits)]
  ),
  
  milliDiv = SVA_gr$milliDiv[subjectHits(SVA_hits)],
  milliDel = SVA_gr$milliDel[subjectHits(SVA_hits)],
  milliIns = SVA_gr$milliIns[subjectHits(SVA_hits)]
)

SVA_overlap_df %>% 
  dplyr::left_join(H3K27ac_lookup) %>% 
  dplyr::filter(cluster %in% c("Set_1","Set_2","Set_3")) %>% 
  ggplot(., aes(x = TE_type, y = milliDiv)) +
   geom_violin(trim = FALSE) +
   geom_boxplot(width = 0.15, outlier.shape = NA) +
   coord_flip() +
   labs(
     y = "Divergence from consensus (milliDiv)",
     x = "TE family",
     title = "Age distribution of SVA elements overlapping H3K27ac"
   )+
  facet_wrap(~cluster)

Past versions of "SVA Overlapping-1.png"

Version	Author	Date
68a0095	reneeisnowhere	2026-02-02

Looking for overlapping information: LTR specific

Here I am exploring H3K27ac ROIs which overlap LTRs and also overlap H3K9me3 ROIs, then exploring LFC of the H3K27ac ROI sets across families of LTRs. First I wanted to know how many H3K27ac ROIs overlap LTRs, and how many of those LTRs overlap more than one ROI:

LTR_overlap_df %>% 
  count(Peakid, name = "n_peaks") %>%
  count(n_peaks)

# A tibble: 12 × 2
   n_peaks     n
     <int> <int>
 1       1 18389
 2       2  4997
 3       3  1468
 4       4   432
 5       5   144
 6       6    56
 7       7    26
 8       8     8
 9       9     8
10      10     3
11      11     1
12      12     1

LTR_only_K27ac_peakids <- LTR_overlap_df %>% distinct(Peakid)

I then overlapped ROIs with H3K9me3 ROIs to see how many H3K9me3 ROIs overlap H3K27ac ROIs. (interpret with n_peaks being how many H3K27ac ROIs and n being number of H3K9me3 ROIS, So 33,567 K9me3 rOIs overlap 1 H3K27me3

K9me3_hits <- findOverlaps(H3K27ac_sets_gr$all_H3K27ac, H3K9me3_sets_gr$all_H3K9me3_regions, ignore.strand = TRUE)

K9me3_overlap_df <- tibble(
  peak_row = queryHits(K9me3_hits),
  Peakid   = H3K27ac_sets_gr$all_H3K27ac$Peakid[queryHits(K9me3_hits)],
  cluster  = H3K27ac_sets_gr$all_H3K27ac$cluster[queryHits(K9me3_hits)],
  ROI_K9me3 = H3K9me3_sets_gr$all_H3K9me3_regions$Peakid[subjectHits(K9me3_hits)])

K9me3_overlap_df %>%
  count(Peakid, name = "n_peaks") %>%
  count(n_peaks)

# A tibble: 17 × 2
   n_peaks     n
     <int> <int>
 1       1 33567
 2       2  5184
 3       3  1072
 4       4   303
 5       5   161
 6       6    59
 7       7    38
 8       8    20
 9       9    11
10      10     8
11      11    12
12      12     3
13      13     4
14      14     1
15      15     4
16      16     3
17      17     2

K9me3_only_K27ac_peakids <- K9me3_overlap_df %>% distinct(Peakid)

Now to filter and connect H3K27ac ROIs, that overlap LTRs and at least one H3K9me3

LTR_overlap_df %>% 
  dplyr::filter(Peakid %in% K9me3_only_K27ac_peakids$Peakid) %>%  distinct(RM_id)

# A tibble: 12,645 × 1
   RM_id                 
   <chr>                 
 1 chr1:1003379-1003425:1
 2 chr1:1003500-1003623:1
 3 chr1:1005447-1005607:1
 4 chr1:1017170-1018876:1
 5 chr1:1214911-1215005:1
 6 chr1:1235837-1235999:1
 7 chr1:1259547-1259908:1
 8 chr1:1357233-1357526:1
 9 chr1:1357817-1357890:1
10 chr1:1382090-1382288:1
# ℹ 12,635 more rows

LFC of those regions

LTR_overlap_df %>% 
  dplyr::filter(Peakid %in% K9me3_only_K27ac_peakids$Peakid) %>% 
  
  left_join(., K27ac_lfctable, by = c("Peakid"="genes")) %>% 
  group_by(TE_type) %>% 
  tally() %>% 
   ungroup() %>% 
  DT::datatable(
    rownames = FALSE,
    caption = htmltools::tags$caption(
      style = "caption-side: top; text-align: left;",
      "H3K27ac LTR specific overlap counts by TE familiy which also overlap H3K9me3"),
    options = list(pageLength = 10,
      autoWidth = TRUE,
      dom = "tip"))

LTR_overlap_df %>% 
  dplyr::left_join(H3K27ac_lookup) %>% 
   dplyr::filter(Peakid %in% K9me3_only_K27ac_peakids$Peakid) %>% 
  dplyr::filter(cluster %in% c("Set_1","Set_2","Set_3")) %>% 
  ggplot(., aes(x = TE_type, y = milliDiv)) +
   geom_violin(trim = FALSE) +
   geom_boxplot(width = 0.15, outlier.shape = NA) +
   coord_flip() +
   labs(
     y = "Divergence from consensus (milliDiv)",
     x = "TE family",
     title = "Age distribution of LTR elements overlapping H3K27ac and H3K9me3"
   )+
  facet_wrap(~cluster)

Past versions of unnamed-chunk-8-1.png

Version	Author	Date
81af285	reneeisnowhere	2026-02-04

LTR_K9me3_H3K27ac_lfc <- LTR_overlap_df %>% 
   left_join(., K27ac_lfctable, by = c("Peakid"="genes")) %>%
   dplyr::filter(Peakid %in% K9me3_only_K27ac_peakids$Peakid)

plot_K27_family <- function(lfc_df,
                            grp="H3K27ac",
                            repFamily,
                            fam_name){

  lfc_df %>% 
  dplyr::filter(Peakid %in% K9me3_only_K27ac_peakids$Peakid) %>% 
    dplyr::filter(.data$TE_type %in% fam_name) %>% 
  dplyr::filter(cluster != "NA") %>% 
  pivot_longer(.,cols=c(starts_with(grp)), names_to="group", values_to = "LFC") %>% 
  group_by(cluster, group) %>%
  summarise(median_abs_LFC = median(abs(LFC), na.rm = TRUE),
            .groups = "drop")%>% 
  mutate(time=str_remove(group,grp))%>% 
  mutate(time=factor(time, levels=c("_24T","_24R","_144R"))) %>% 
  ggplot(., aes(x=time, y=median_abs_LFC, group=cluster, color=cluster))+
  geom_point(size=4)+
  geom_line(aes(alpha = 0.8, linewidth = 4))+
  theme_bw()+
  ggtitle(paste0(grp," absolute LFC overlapping ",repFamily,":",fam_name))
}

plot_K27_family(LTR_K9me3_H3K27ac_lfc,"H3K27ac","LTR","ERV1")+
  scale_color_manual(values = cluster_colors, drop = FALSE)

Past versions of "LTR lfc H3K9me3-1.png"

Version	Author	Date
68a0095	reneeisnowhere	2026-02-02

plot_K27_family(LTR_K9me3_H3K27ac_lfc,"H3K27ac","LTR","ERVK")+
  scale_color_manual(values = cluster_colors, drop = FALSE)

Past versions of "LTR lfc H3K9me3-2.png"

Version	Author	Date
68a0095	reneeisnowhere	2026-02-02

plot_K27_family(LTR_K9me3_H3K27ac_lfc,"H3K27ac","LTR","ERVL")+
  scale_color_manual(values = cluster_colors, drop = FALSE)

Past versions of "LTR lfc H3K9me3-3.png"

Version	Author	Date
68a0095	reneeisnowhere	2026-02-02

plot_K27_family(LTR_K9me3_H3K27ac_lfc,"H3K27ac","LTR","Gypsy")+
  scale_color_manual(values = cluster_colors, drop = FALSE)

Past versions of "LTR lfc H3K9me3-4.png"

Version	Author	Date
68a0095	reneeisnowhere	2026-02-02

plot_K27_family(LTR_K9me3_H3K27ac_lfc,"H3K27ac","LTR","ERVL-MaLR")+
  scale_color_manual(values = cluster_colors, drop = FALSE)

Past versions of "LTR lfc H3K9me3-5.png"

Version	Author	Date
68a0095	reneeisnowhere	2026-02-02

plot_K27_family(LTR_K9me3_H3K27ac_lfc,"H3K27ac","LTR","LTR")+
  scale_color_manual(values = cluster_colors, drop = FALSE)

Past versions of "LTR lfc H3K9me3-6.png"

Version	Author	Date
68a0095	reneeisnowhere	2026-02-02

Raw LFC exploration

This will look at Raw LFC for all H3K27ac ROIs that overlap an LTR

LTR_overlap_df %>% 
  
   left_join(., K27ac_lfctable, by = c("Peakid"="genes")) %>% 
  pivot_longer(.,cols=c(starts_with("H3K27ac")), names_to="group", values_to = "LFC") %>% 
  group_by(cluster, group) %>%
  # summarise(median_LFC = median(LFC), na.rm = TRUE),
  #           .groups = "drop")%>% 
  dplyr::filter(cluster=="Set_2") %>% 
   mutate(time=str_remove(group,"H3K27ac"))%>% 
  mutate(time=factor(time, levels=c("_24T","_24R","_144R")))  %>% 
  ggplot(., aes(x=time, y = LFC, group=Peakid))+
  geom_line(alpha = 0.3) +
  geom_point(size = 1) +
  theme_classic() +
  labs(
    x = "Time point",
    y = "Log2 Fold Change",
    title = "H3K27ac LFC  for Set_2 LTR-overlapping regions")

Past versions of unnamed-chunk-10-1.png

Version	Author	Date
81af285	reneeisnowhere	2026-02-04

LTR_overlap_df %>% 
   left_join(., K27ac_lfctable, by = c("Peakid"="genes")) %>% 
  pivot_longer(.,cols=c(starts_with("H3K27ac")), names_to="group", values_to = "LFC") %>% 
  group_by(cluster, group) %>%
  # summarise(median_LFC = median(LFC), na.rm = TRUE),
  #           .groups = "drop")%>% 
  # dplyr::filter(cluster=="Set_3") %>% 
   mutate(time=str_remove(group,"H3K27ac"))%>% 
  mutate(time=factor(time, levels=c("_24T","_24R","_144R")))  %>% 
  ggplot(., aes(x=time, y = LFC, group=Peakid, color=case))+
  geom_line(alpha = 0.3) +
  geom_point(size = 1) +
  theme_classic() +
  facet_wrap(~cluster)+
  labs(
    x = "Time point",
    y = "Log2 Fold Change",
    title = "H3K27ac LFC  for all LTR-overlapping regions")

Past versions of unnamed-chunk-10-2.png

Version	Author	Date
81af285	reneeisnowhere	2026-02-04

Getting some number about how many, etc…

LTR_overlap_df %>% 
  dplyr::left_join(H3K27ac_lookup) %>% 
  group_by(TE_type,cluster) %>% 
  tally() %>% 
  pivot_wider(id_cols = TE_type, names_from = cluster, values_from = n) %>% 
  ungroup() %>% 
  DT::datatable(
    rownames = FALSE,
    caption = htmltools::tags$caption(
      style = "caption-side: top; text-align: left;",
      "H3K27ac LTR specific overlap counts by TE familiy"),
    options = list(pageLength = 10,
      autoWidth = TRUE,
      dom = "tip"))

now breaking out by family

LTR_overlap_df %>% 
   left_join(., K27ac_lfctable, by = c("Peakid"="genes")) %>% 
  pivot_longer(.,cols=c(starts_with("H3K27ac")), names_to="group", values_to = "LFC") %>% 
  group_by(cluster, group) %>%
  # summarise(median_LFC = median(LFC), na.rm = TRUE),
  #           .groups = "drop")%>% 
  dplyr::filter(cluster=="Set_2") %>% 
   mutate(time=str_remove(group,"H3K27ac"))%>% 
  mutate(time=factor(time, levels=c("_24T","_24R","_144R")))  %>% 
  ggplot(., aes(x=time, y = LFC, group=Peakid, color=case))+
  geom_line(alpha = 0.3) +
  geom_point(size = 1) +
  theme_classic() +
  facet_wrap(~TE_type)+
  labs(
    x = "Time point",
    y = "Log2 Fold Change",
    title = "H3K27ac LFC  for Set_2 LTR-overlapping regions")

Past versions of unnamed-chunk-12-1.png

Version	Author	Date
81af285	reneeisnowhere	2026-02-04

LTR_overlap_df %>% 
  left_join(., K27ac_lfctable, by = c("Peakid"="genes")) %>% 
  pivot_longer(.,cols=c(starts_with("H3K27ac")), names_to="group", values_to = "LFC") %>% 
  group_by(cluster, group) %>%
  # summarise(median_LFC = median(LFC), na.rm = TRUE),
  #           .groups = "drop")%>% 
  dplyr::filter(cluster=="Set_3") %>% 
   mutate(time=str_remove(group,"H3K27ac"))%>% 
  mutate(time=factor(time, levels=c("_24T","_24R","_144R")))  %>% 
  ggplot(., aes(x=time, y = LFC, group=Peakid, color=case))+
  geom_line(alpha = 0.3) +
  geom_point(size = 1) +
  theme_classic() +
  facet_wrap(~TE_type)+
  labs(
    x = "Time point",
    y = "Log2 Fold Change",
    title = "H3K27ac LFC  for Set_3 LTR-overlapping regions")

Past versions of unnamed-chunk-12-2.png

Version	Author	Date
81af285	reneeisnowhere	2026-02-04

There appears to be a lot of variation on LFC. Direction is obscuring information. I am now attempting to create a list of ROIs by set where LFC across time is always >0 (The up group), another set where LFC across time is always <0 (The down group), and the catch all mixed group.

### already added to the K27ac_lfctable
# LTR_overlap_df %>% 
#   dplyr::left_join(H3K27ac_lookup) %>% 
#    left_join(., K27ac_lfctable, by = c("Peakid"="genes")) %>% 
#    mutate(case= case_when(H3K27ac_24T > 0 & H3K27ac_24R >0 & H3K27ac_144R>0~"A",
#                               H3K27ac_24T < 0 & H3K27ac_24R <0 & H3K27ac_144R<0~"B",
#                               TRUE ~ "C")) %>% 
#   mutate(set_case=paste0(cluster,"_",case))
median_df <- K27ac_lfctable %>% 
  pivot_longer(.,cols=c(starts_with("H3K27ac")), names_to="group", values_to = "LFC") %>% 
  mutate(
    time = stringr::str_remove(group, "H3K27ac"),
    time = factor(time, levels = c("_24T", "_24R", "_144R"))
  ) %>%
  group_by(cluster, time) %>% 
  summarise(
    median_LFC = median(LFC, na.rm = TRUE),
    n_peaks = dplyr::n(),
    .groups = "drop")
  
K27ac_lfctable %>% 
  pivot_longer(.,cols=c(starts_with("H3K27ac")), names_to="group", values_to = "LFC") %>% 
   mutate(time=str_remove(group,"H3K27ac"))%>% 
  mutate(time=factor(time, levels=c("_24T","_24R","_144R")))  %>% 
  ggplot(., aes(x=time, y = LFC, group=genes, color=case))+
  ggrastr::rasterise(geom_line(alpha = 0.15)) +
  ggrastr::geom_point_rast(size = 1) +
  geom_line(data=median_df, aes(x=time, y=median_LFC, group = cluster),inherit.aes = FALSE, linewidth =2)+
  theme_classic() +
  facet_wrap(~cluster)+
  labs(
    x = "Time point",
    y = "Log2 Fold Change",
    title = "H3K27ac LFC  for all H3K27ac regions")

Past versions of "split groups by LFC-1.png"

Version	Author	Date
3fa291d	reneeisnowhere	2026-02-03

K27ac_lfctable %>% 
  pivot_longer(.,cols=c(starts_with("H3K27ac")), names_to="group", values_to = "LFC") %>% 
   mutate(time=str_remove(group,"H3K27ac"))%>% 
  mutate(time=factor(time, levels=c("_24T","_24R","_144R")))  %>% 
  ggplot(., aes(x=time, y = LFC, group=genes))+
  ggrastr::rasterise(geom_line(alpha = 0.15,color="darkgray")) +
  ggrastr::geom_point_rast(size = 1) +
  geom_line(data=median_df, aes(x=time, y=median_LFC, group = cluster),inherit.aes = FALSE, linewidth =2)+
  theme_classic() +
  facet_wrap(~cluster)+
  labs(
    x = "Time point",
    y = "Log2 Fold Change",
    title = "H3K27ac LFC  for all H3K27ac regions")

Past versions of "split groups by LFC-2.png"

Version	Author	Date
9a1e513	reneeisnowhere	2026-02-17
1a85f13	reneeisnowhere	2026-02-17

K27ac_lfctable %>% 
  group_by(cluster,case) %>% 
  tally() %>% pivot_wider(id_cols=case, names_from = cluster, values_from = n) %>% 
  mutate(type=case_when(case=="A"~"All LFC > 0",
                        case=="B" ~ "All LFC < 0",
                        case=="C"~"Mixed up and down LFC")) %>% 
  DT::datatable(
    rownames = FALSE,
    caption = htmltools::tags$caption(
      style = "caption-side: top; text-align: left;",
      "H3K27ac ROI counts stratified by LFC case"),
    options = list(pageLength = 10,
      autoWidth = TRUE,
      dom = "tip"))

H3K27ac_Sets <- K27ac_lfctable %>%
  dplyr::rename("Peakid"=genes)

H3K27ac_set_case_lfc <- split(H3K27ac_Sets, H3K27ac_Sets$set_case)

# saveRDS(H3K27ac_set_case_lfc, "data/RDS_files/H3K27ac_set_case_lfc.RDS")
unique(rpt_split$`LTR`$repFamily)

Zooming back in on summits,

What do LFCs of ROIs whose summits cross LTRs?

toss <- findOverlaps(H3K27ac_summit_gr, LTR_gr)
# toss %>% 
#   as.data.frame() %>% 
#   distinct(Peakid)
LTR_summits_overlap_df <- tibble(
  peak_row = queryHits(toss),
  Peakid   = H3K27ac_summit_gr$Peakid[queryHits(toss)],
  cluster  = H3K27ac_sets_gr$cluster[queryHits(toss)],
  
  repClass = LTR_gr$repClass[subjectHits(toss)],
  repName  = LTR_gr$repName[subjectHits(toss)],
  RM_id  = LTR_gr$RM_id[subjectHits(toss)],
  TE_type  = ifelse(
    LTR_gr$repFamily[subjectHits(toss)] == "SVA",
    LTR_gr$repName[subjectHits(toss)],
    LTR_gr$repFamily[subjectHits(toss)]
  ),
  
  milliDiv = LTR_gr$milliDiv[subjectHits(toss)],
  milliDel = LTR_gr$milliDel[subjectHits(toss)],
  milliIns = LTR_gr$milliIns[subjectHits(toss)]
)
summit_LTR_peakids <- LTR_summits_overlap_df %>% distinct(Peakid)

split_summit_LTR_peakids <- split(LTR_summits_overlap_df, LTR_summits_overlap_df$TE_type)

saveRDS(LTR_summits_overlap_df,"data/RDS_files/H3K27ac_summit_LTR_overlaps.RDS")

med_LTR_LFC <- K27ac_lfctable %>% 
  dplyr::filter(genes %in% summit_LTR_peakids$Peakid) %>% 
  pivot_longer(.,cols=c(starts_with("H3K27ac")), names_to="group", values_to = "LFC") %>% 
   mutate(
    time = stringr::str_remove(group, "H3K27ac"),
    time = factor(time, levels = c("_24T", "_24R", "_144R"))
  ) %>%
  group_by(cluster, time) %>% 
  summarise(
    median_LFC = median(LFC, na.rm = TRUE),
    n_peaks = dplyr::n(),
    .groups = "drop")


K27ac_lfctable %>% 
  dplyr::filter(genes %in% summit_LTR_peakids$Peakid) %>% 
  pivot_longer(.,cols=c(starts_with("H3K27ac")), names_to="group", values_to = "LFC") %>% 
   mutate(time=str_remove(group,"H3K27ac"))%>% 
  mutate(time=factor(time, levels=c("_24T","_24R","_144R")))  %>% 
  ggplot(., aes(x=time, y = LFC, group=genes, color=case))+
  ggrastr::rasterise(geom_line(alpha = 0.15)) +
  ggrastr::geom_point_rast(size = 1) +
  geom_line(data=med_LTR_LFC, aes(x=time, y=median_LFC, group = cluster),inherit.aes = FALSE, linewidth =2)+
  theme_classic() +
  facet_wrap(~cluster)+
  labs(
    x = "Time point",
    y = "Log2 Fold Change",
    title = "H3K27ac LFC for all H3K27ac regions whose summits cross an LTR")

Past versions of "All LTRs and summits-1.png"

Version	Author	Date
81af285	reneeisnowhere	2026-02-04

median_LFC_H3K27ac_group_plot <- function(lfc_df,repFam){

  pid_df <- split_summit_LTR_peakids[[repFam]]

  med_df <- lfc_df %>% 
  dplyr::filter(genes %in% pid_df$Peakid) %>%
  pivot_longer(.,cols=c(starts_with("H3K27ac")), names_to="group", values_to = "LFC") %>% 
  mutate(
    time = stringr::str_remove(group, "H3K27ac"),
    time = factor(time, levels = c("_24T", "_24R", "_144R"))
  ) %>%
  group_by(cluster, time) %>% 
  summarise(
    median_LFC = median(LFC, na.rm = TRUE),
    n_peaks = dplyr::n(),
    .groups = "drop")
  
  label_df <- med_df %>%
  group_by(cluster) %>%
  summarise(n_peaks = unique(n_peaks),   # same for all times within a cluster
    .groups = "drop") %>%
  mutate(label = paste0("n = ", n_peaks),
    time = "_144R",               # anchor text at first x position
    y = Inf )  ##place at top of panel


  lfc_df %>% 
  dplyr::filter(genes %in% pid_df$Peakid) %>%
  pivot_longer(.,cols=c(starts_with("H3K27ac")), names_to="group", values_to = "LFC") %>% 
   mutate(time=str_remove(group,"H3K27ac"))%>% 
  mutate(time=factor(time, levels=c("_24T","_24R","_144R")))  %>% 
  ggplot(., aes(x=time, y = LFC, group=genes, color=case))+
  ggrastr::rasterise(geom_line(alpha = 0.15)) +
  ggrastr::geom_point_rast(size = 1) +
  geom_line(data=med_df, aes(x=time, y=median_LFC, group = cluster),inherit.aes = FALSE, linewidth =2)+
    geom_text(data = label_df,  aes(x = time, y = y, label = label),  inherit.aes = FALSE,  vjust = 1.2,  hjust = .2,  size = 4)+
  theme_classic() +
  facet_wrap(~cluster)+
  labs(
    x = "Time point",
    y = "Log2 Fold Change",
    title = paste0("H3K27ac LFC, ROI summits cross an LTR:",repFam))
  }

median_LFC_H3K27ac_group_plot(K27ac_lfctable,"ERVL-MaLR")

Past versions of "All LTRs and summits ERV1-1.png"

Version	Author	Date
81af285	reneeisnowhere	2026-02-04

median_LFC_H3K27ac_group_plot(K27ac_lfctable,"ERV1")

Past versions of "All LTRs and summits ERV1-2.png"

Version	Author	Date
81af285	reneeisnowhere	2026-02-04

median_LFC_H3K27ac_group_plot(K27ac_lfctable,"ERVL")

Past versions of "All LTRs and summits ERV1-3.png"

Version	Author	Date
81af285	reneeisnowhere	2026-02-04

median_LFC_H3K27ac_group_plot(K27ac_lfctable,"ERVK")

Past versions of "All LTRs and summits ERV1-4.png"

Version	Author	Date
81af285	reneeisnowhere	2026-02-04

median_LFC_H3K27ac_group_plot(K27ac_lfctable,"Gypsy")

Past versions of "All LTRs and summits ERV1-5.png"

Version	Author	Date
81af285	reneeisnowhere	2026-02-04

median_LFC_H3K27ac_group_plot(K27ac_lfctable,"LTR")

Past versions of "All LTRs and summits ERV1-6.png"

Version	Author	Date
81af285	reneeisnowhere	2026-02-04

Age questions

I had a question about age and LTRs:

age_summit_kw <- LTR_summits_overlap_df %>% 
  left_join(H3K27ac_lookup) %>% 
  filter(cluster %in% c("Set_1","Set_2","Set_3")) %>% 
  group_by(TE_type) %>% 
  summarise(
    kw_p = kruskal.test(milliDiv ~ cluster)$p.value)

age_summit_kw

# A tibble: 6 × 2
  TE_type     kw_p
  <chr>      <dbl>
1 ERV1      0.177 
2 ERVK      0.681 
3 ERVL      0.0257
4 ERVL-MaLR 0.0299
5 Gypsy     0.0835
6 LTR       0.306 

test_TE_age_pairs_summits <- function(df,
                              TE_type_query,
                              sets = c("Set_1", "Set_2", "Set_3")) {

  pid_df <- split_summit_LTR_peakids[[TE_type_query]]
  
  sub_df <- pid_df %>% 
    dplyr::left_join(H3K27ac_lookup) %>%
   
    dplyr::filter(
      TE_type == TE_type_query,
      cluster %in% sets,
      !is.na(milliDiv)
    )

  # Medians first (ground truth)
  med_df <- sub_df %>% 
    dplyr::group_by(cluster) %>% 
    dplyr::summarise(
      median_age = median(milliDiv, na.rm = TRUE),
      n = dplyr::n(),
      .groups = "drop"
    )

  # Pairwise Wilcoxon
  pw <- pairwise.wilcox.test(
    x = sub_df$milliDiv,
    g = sub_df$cluster,
    p.adjust.method = "BH"
  )

  # Tidy + enforce symmetric pairs
  pw_df <- as.data.frame(as.table(pw$p.value)) %>% 
    dplyr::filter(!is.na(Freq)) %>% 
    dplyr::rename(
      set_A = Var1,
      set_B = Var2,
      p_adj = Freq
    )

  # Join medians *by value*, not position
  pw_df %>% 
    dplyr::left_join(med_df, by = c("set_A" = "cluster")) %>% 
    dplyr::rename(median_A = median_age, n_A = n) %>% 
    dplyr::left_join(med_df, by = c("set_B" = "cluster")) %>% 
    dplyr::rename(median_B = median_age, n_B = n) %>% 
    dplyr::mutate(
      older_set = dplyr::case_when(
        median_A > median_B ~ set_A,
        median_B > median_A ~ set_B,
        TRUE ~ "equal"
      ),
      TE_type = TE_type_query
    )
}

testing age pairs between ROI summits

test_TE_age_pairs_summits(LTR_summits_overlap_df, "ERVL")

  set_A set_B      p_adj median_A n_A median_B  n_B older_set TE_type
1 Set_2 Set_1 0.55190415      254  33      244 2137     Set_2    ERVL
2 Set_3 Set_1 0.02482948      256 136      244 2137     Set_3    ERVL
3 Set_3 Set_2 0.55190415      256 136      254   33     Set_3    ERVL

test_TE_age_pairs_summits(LTR_summits_overlap_df, "ERV1")

  set_A set_B     p_adj median_A n_A median_B  n_B older_set TE_type
1 Set_2 Set_1 0.8642775      150  33      156 1837     Set_1    ERV1
2 Set_3 Set_1 0.1945868      150 203      156 1837     Set_1    ERV1
3 Set_3 Set_2 0.6037261      150 203      150   33     equal    ERV1

test_TE_age_pairs_summits(LTR_summits_overlap_df, "ERVL-MaLR")

  set_A set_B     p_adj median_A n_A median_B  n_B older_set   TE_type
1 Set_2 Set_1 0.1007233      247  53      235 2699     Set_2 ERVL-MaLR
2 Set_3 Set_1 0.1455446      246 201      235 2699     Set_3 ERVL-MaLR
3 Set_3 Set_2 0.2753333      246 201      247   53     Set_2 ERVL-MaLR

compare_case_age <- function(df,
                             TE_family,
                             set_case_1,
                             set_case_2) {

  sub_df <- df %>% 
    dplyr::left_join(set_case_list_H3K27ac, by=c("Peakid"="genes")) %>% 
    dplyr::filter(
      TE_type == TE_family,
      set_case %in% c(set_case_1, set_case_2),
      !is.na(milliDiv)
    )

  med_df <- sub_df %>% 
    dplyr::group_by(set_case) %>% 
    dplyr::summarise(
      median_age = median(milliDiv),
      n = dplyr::n(),
      .groups = "drop"
    )

  test <- wilcox.test(milliDiv ~ set_case, data = sub_df)

  tibble::tibble(
    TE_type = TE_family,
    group_1 = set_case_1,
    group_2 = set_case_2,
    median_1 = med_df$median_age[med_df$set_case == set_case_1],
    median_2 = med_df$median_age[med_df$set_case == set_case_2],
    n_1 = med_df$n[med_df$set_case == set_case_1],
    n_2 = med_df$n[med_df$set_case == set_case_2],
    p_value = test$p.value,
    older_group = dplyr::case_when(
      median_1 > median_2 ~ set_case_1,
      median_2 > median_1 ~ set_case_2,
      TRUE ~ "equal"
    )
  )
}

LTR_summits_overlap_df %>% 
  dplyr::left_join(set_case_list_H3K27ac, by=c("Peakid"="genes")) %>%
  dplyr::filter(
    TE_type == "ERV1",
    set_case %in% c("Set_1_A", "Set_2_A")
  ) %>% 
  ggplot(aes(x = set_case, y = milliDiv, fill = set_case)) +
  geom_violin(trim = FALSE) +
  geom_boxplot(width = 0.15, outlier.shape = NA) +
  theme_classic() +
  labs(
    y = "Divergence from consensus (milliDiv)",
    x = NULL,
    title = "ERV1 age comparison by set_case"
  )

Past versions of unnamed-chunk-17-1.png

Version	Author	Date
81af285	reneeisnowhere	2026-02-04

compare_case_age(LTR_summits_overlap_df,"ERV1","Set_1_A","Set_3_A")

# A tibble: 1 × 9
  TE_type group_1 group_2 median_1 median_2   n_1   n_2 p_value older_group
  <chr>   <chr>   <chr>      <dbl>    <dbl> <int> <int>   <dbl> <chr>      
1 ERV1    Set_1_A Set_3_A     152.      150   292   115   0.308 Set_1_A    

compare_case_age(LTR_summits_overlap_df,"ERVL","Set_1_A","Set_3_A")

# A tibble: 1 × 9
  TE_type group_1 group_2 median_1 median_2   n_1   n_2 p_value older_group
  <chr>   <chr>   <chr>      <dbl>    <dbl> <int> <int>   <dbl> <chr>      
1 ERVL    Set_1_A Set_3_A      242      221   339    33   0.311 Set_1_A    

compare_case_age(LTR_summits_overlap_df,"ERVK","Set_1_A","Set_3_A")

# A tibble: 1 × 9
  TE_type group_1 group_2 median_1 median_2   n_1   n_2 p_value older_group
  <chr>   <chr>   <chr>      <dbl>    <dbl> <int> <int>   <dbl> <chr>      
1 ERVK    Set_1_A Set_3_A     87.5       82    60     2   0.780 Set_1_A    

compare_case_age(LTR_summits_overlap_df,"ERVL-MaLR","Set_1_A","Set_3_A")

# A tibble: 1 × 9
  TE_type   group_1 group_2 median_1 median_2   n_1   n_2 p_value older_group
  <chr>     <chr>   <chr>      <dbl>    <dbl> <int> <int>   <dbl> <chr>      
1 ERVL-MaLR Set_1_A Set_3_A      237      244   477    71   0.548 Set_3_A    

compare_case_age(LTR_summits_overlap_df,"ERV1","Set_1_A","Set_3_A")

# A tibble: 1 × 9
  TE_type group_1 group_2 median_1 median_2   n_1   n_2 p_value older_group
  <chr>   <chr>   <chr>      <dbl>    <dbl> <int> <int>   <dbl> <chr>      
1 ERV1    Set_1_A Set_3_A     152.      150   292   115   0.308 Set_1_A    

compare_case_age(LTR_summits_overlap_df,"ERV1","Set_1_A","Set_3_A")

# A tibble: 1 × 9
  TE_type group_1 group_2 median_1 median_2   n_1   n_2 p_value older_group
  <chr>   <chr>   <chr>      <dbl>    <dbl> <int> <int>   <dbl> <chr>      
1 ERV1    Set_1_A Set_3_A     152.      150   292   115   0.308 Set_1_A    

ERV1_summit_df <- split_summit_LTR_peakids$ERV1 %>% 
  left_join(., set_case_list_H3K27ac, by = c("Peakid"="genes")) %>% 
  dplyr::filter(cluster %in% c("Set_1","Set_2","Set_3"))  
  

cluster_pairs <- list(c("Set_1","Set_2"),
                      c("Set_1", "Set_3"),
                      c("Set_2","Set_3"))


ERV1_pval_df <- ERV1_summit_df %>%
  group_by(case) %>%
  group_modify(~ {
    map_dfr(cluster_pairs, function(pair) {
      x <- .x %>% filter(cluster == pair[1]) %>% pull(milliDiv)
      y <- .x %>% filter(cluster == pair[2]) %>% pull(milliDiv)
      tibble(
        cluster1 = pair[1],
        cluster2 = pair[2],
        p_value = wilcox.test(x, y)$p.value)
    })
  })


ggplot(ERV1_summit_df, aes(x = cluster, y = milliDiv, fill = cluster)) +
  geom_violin(trim = FALSE) +
  geom_boxplot(width = 0.15, outlier.shape = NA) +
  facet_wrap(~case) +
  theme_classic() +
  labs(
    y = "Divergence from consensus (milliDiv)",
    x = "Set",
    title = "ERV1 age comparisons across sets within each case"
  ) +
  geom_signif(
    comparisons = cluster_pairs,
    test = "wilcox.test",
    map_signif_level = TRUE,
    textsize = 3,
    step_increase = 0.1
  )

Past versions of "ERV1 case summit-1.png"

Version	Author	Date
81af285	reneeisnowhere	2026-02-04

ERVL_summit_df <- split_summit_LTR_peakids$ERVL %>% 
  left_join(., set_case_list_H3K27ac, by = c("Peakid"="genes")) %>% 
  dplyr::filter(cluster %in% c("Set_1","Set_2","Set_3"))  
  

cluster_pairs <- list(c("Set_1","Set_2"),
                      c("Set_1", "Set_3"),
                      c("Set_2","Set_3"))


ERVL_pval_df <- ERVL_summit_df %>%
  group_by(case) %>%
  group_modify(~ {
    map_dfr(cluster_pairs, function(pair) {
      x <- .x %>% filter(cluster == pair[1]) %>% pull(milliDiv)
      y <- .x %>% filter(cluster == pair[2]) %>% pull(milliDiv)
      tibble(
        cluster1 = pair[1],
        cluster2 = pair[2],
        p_value = wilcox.test(x, y)$p.value)
    })
  })


ggplot(ERVL_summit_df, aes(x = cluster, y = milliDiv, fill = cluster)) +
  geom_violin(trim = FALSE) +
  geom_boxplot(width = 0.15, outlier.shape = NA) +
  facet_wrap(~case) +
  theme_classic() +
  labs(
    y = "Divergence from consensus (milliDiv)",
    x = "Set",
    title = "ERVL age comparisons across sets within each case"
  ) +
  geom_signif(
    comparisons = cluster_pairs,
    test = "wilcox.test",
    map_signif_level = TRUE,
    textsize = 3,
    step_increase = 0.1
  )

Past versions of "ERVL case summit-1.png"

Version	Author	Date
81af285	reneeisnowhere	2026-02-04

split_summit_LTR_peakids$ERV1 %>% 
  left_join(., set_case_list_H3K27ac, by = c("Peakid"="genes")) %>% 
  dplyr::filter(cluster %in% c("Set_1","Set_2","Set_3")) %>% 
  ggplot(., aes(x = cluster, y = milliDiv)) +
  geom_violin(trim = FALSE) +
   geom_boxplot(width = 0.15, outlier.shape = NA) +
  facet_wrap(~case)

Past versions of unnamed-chunk-19-1.png

Version	Author	Date
81af285	reneeisnowhere	2026-02-04

ERV1_case_df <- split_summit_LTR_peakids$ERV1 %>% 
  left_join(set_case_list_H3K27ac, by = c("Peakid" = "genes")) %>% 
  filter(cluster %in% c("Set_1", "Set_2", "Set_3"),
         case %in% c("A", "B"))  # only compare A vs B


ggplot(ERV1_case_df, aes(x = case, y = milliDiv, fill = case)) +
  geom_violin(trim = FALSE) +
  geom_boxplot(width = 0.15, outlier.shape = NA) +
  facet_wrap(~cluster) +
  theme_classic() +
  labs(
    y = "Divergence from consensus (milliDiv)",
    x = "Case",
    title = "ERV1 age comparison: A vs B within each cluster"
  ) +
  geom_signif(
    comparisons = list(c("A", "B")),
    test = "wilcox.test",
    map_signif_level = TRUE,
    textsize = 3,
    step_increase = .1)

Past versions of "ERV1 case plot-1.png"

Version	Author	Date
81af285	reneeisnowhere	2026-02-04

ERVL_case_df <- split_summit_LTR_peakids$ERVL %>% 
  left_join(set_case_list_H3K27ac, by = c("Peakid" = "genes")) %>% 
  filter(cluster %in% c("Set_1", "Set_2", "Set_3"),
         case %in% c("A", "B"))  # only compare A vs B


ggplot(ERVL_case_df, aes(x = case, y = milliDiv, fill = case)) +
  geom_violin(trim = FALSE) +
  geom_boxplot(width = 0.15, outlier.shape = NA) +
  facet_wrap(~cluster) +
  theme_classic() +
  labs(
    y = "Divergence from consensus (milliDiv)",
    x = "Case",
    title = "ERVL age comparison: A vs B within each cluster"
  ) +
  geom_signif(
    comparisons = list(c("A", "B")),
    test = "wilcox.test",
    map_signif_level = TRUE,
    textsize = 3,
    step_increase = .1)

Past versions of "ERVL case plot-1.png"

Version	Author	Date
81af285	reneeisnowhere	2026-02-04

ERVK_case_df <- split_summit_LTR_peakids$ERVK %>% 
  left_join(set_case_list_H3K27ac, by = c("Peakid" = "genes")) %>% 
  filter(cluster %in% c("Set_1", "Set_2", "Set_3"),
         case %in% c("A", "B"))  # only compare A vs B


ggplot(ERVK_case_df, aes(x = case, y = milliDiv, fill = case)) +
  geom_violin(trim = FALSE) +
  geom_boxplot(width = 0.15, outlier.shape = NA) +
  facet_wrap(~cluster) +
  theme_classic() +
  labs(
    y = "Divergence from consensus (milliDiv)",
    x = "Case",
    title = "ERVK age comparison: A vs B within each cluster"
  ) +
  geom_signif(
    comparisons = list(c("A", "B")),
    test = "wilcox.test",
    map_signif_level = TRUE,
    textsize = 3,
    step_increase = .1)

Past versions of "ERVK case plot-1.png"

Version	Author	Date
81af285	reneeisnowhere	2026-02-04

ERVL_MaLR_case_df <- split_summit_LTR_peakids$`ERVL-MaLR` %>% 
  left_join(set_case_list_H3K27ac, by = c("Peakid" = "genes")) %>% 
  filter(cluster %in% c("Set_1", "Set_2", "Set_3"),
         case %in% c("A", "B"))  # only compare A vs B


ggplot(ERVL_MaLR_case_df, aes(x = case, y = milliDiv, fill = case)) +
  geom_violin(trim = FALSE) +
  geom_boxplot(width = 0.15, outlier.shape = NA) +
  facet_wrap(~cluster) +
  theme_classic() +
  labs(
    y = "Divergence from consensus (milliDiv)",
    x = "Case",
    title = "ERVL-MaLR age comparison: A vs B within each cluster"
  ) +
  geom_signif(
    comparisons = list(c("A", "B")),
    test = "wilcox.test",
    map_signif_level = TRUE,
    textsize = 3,
    step_increase = .1)

Past versions of "ERVL-MaLR case plot-1.png"

Version	Author	Date
81af285	reneeisnowhere	2026-02-04

Gypsy_case_df <- split_summit_LTR_peakids$Gypsy %>% 
  left_join(set_case_list_H3K27ac, by = c("Peakid" = "genes")) %>% 
  filter(cluster %in% c("Set_1", "Set_2", "Set_3"),
         case %in% c("A", "B"))  # only compare A vs B


ggplot(Gypsy_case_df, aes(x = case, y = milliDiv, fill = case)) +
  geom_violin(trim = FALSE) +
  geom_boxplot(width = 0.15, outlier.shape = NA) +
  facet_wrap(~cluster) +
  theme_classic() +
  labs(
    y = "Divergence from consensus (milliDiv)",
    x = "Case",
    title = "Gypsy age comparison: A vs B within each cluster"
  ) +
  geom_signif(
    comparisons = list(c("A", "B")),
    test = "wilcox.test",
    map_signif_level = TRUE,
    textsize = 3,
    step_increase = .1)

Past versions of "Gypsy case plot-1.png"

Version	Author	Date
81af285	reneeisnowhere	2026-02-04

LTR_case_df <- split_summit_LTR_peakids$LTR %>% 
  left_join(set_case_list_H3K27ac, by = c("Peakid" = "genes")) %>% 
  filter(cluster %in% c("Set_1", "Set_2", "Set_3"),
         case %in% c("A", "B"))  # only compare A vs B


ggplot(LTR_case_df, aes(x = case, y = milliDiv, fill = case)) +
  geom_violin(trim = FALSE) +
  geom_boxplot(width = 0.15, outlier.shape = NA) +
  facet_wrap(~cluster) +
  theme_classic() +
  labs(
    y = "Divergence from consensus (milliDiv)",
    x = "Case",
    title = "LTR age comparison: A vs B within each cluster"
  ) +
  geom_signif(
    comparisons = list(c("A", "B")),
    test = "wilcox.test",
    map_signif_level = TRUE,
    textsize = 3,
    step_increase = .1)

Past versions of "LTR case plot-1.png"

Version	Author	Date
81af285	reneeisnowhere	2026-02-04

listit <- data.frame(x=width(H3K9me3_sets_gr$all_H3K9me3_regions))
ggplot(listit, aes(x=x))+
  geom_density()+ggtitle("H3K9me3 ROI widths")

Past versions of unnamed-chunk-20-1.png

Version	Author	Date
3a5cba8	reneeisnowhere	2026-02-06
81af285	reneeisnowhere	2026-02-04

listit_k27ac <- data.frame(x=width(H3K27ac_sets_gr$all_H3K27ac))

listit %>% 
  summary()

       x          
 Min.   :   85.0  
 1st Qu.:  264.0  
 Median :  394.0  
 Mean   :  519.2  
 3rd Qu.:  634.0  
 Max.   :41434.0  

ggplot(listit_k27ac, aes(x=x))+
  geom_density()+ggtitle("H3K27ac ROI widths")

Past versions of unnamed-chunk-20-2.png

Version	Author	Date
3a5cba8	reneeisnowhere	2026-02-06
81af285	reneeisnowhere	2026-02-04

listit_k27ac %>% 
  summary()

       x        
 Min.   :   87  
 1st Qu.:  581  
 Median :  869  
 Mean   : 1299  
 3rd Qu.: 1469  
 Max.   :97107  

Session information

sessionInfo()

R version 4.4.2 (2024-10-31 ucrt)
Platform: x86_64-w64-mingw32/x64
Running under: Windows 11 x64 (build 26200)

Matrix products: default


locale:
[1] LC_COLLATE=English_United States.utf8 
[2] LC_CTYPE=English_United States.utf8   
[3] LC_MONETARY=English_United States.utf8
[4] LC_NUMERIC=C                          
[5] LC_TIME=English_United States.utf8    

time zone: America/Chicago
tzcode source: internal

attached base packages:
[1] grid      stats4    stats     graphics  grDevices utils     datasets 
[8] methods   base     

other attached packages:
 [1] ggsignif_0.6.4       smplot2_0.2.5        ggVennDiagram_1.5.4 
 [4] ChIPseeker_1.42.1    DT_0.33              ggrepel_0.9.6       
 [7] rtracklayer_1.66.0   genomation_1.38.0    plyranges_1.26.0    
[10] GenomicRanges_1.58.0 GenomeInfoDb_1.42.3  IRanges_2.40.1      
[13] S4Vectors_0.44.0     BiocGenerics_0.52.0  lubridate_1.9.4     
[16] forcats_1.0.0        stringr_1.5.1        dplyr_1.1.4         
[19] purrr_1.1.0          readr_2.1.5          tidyr_1.3.1         
[22] tibble_3.3.0         ggplot2_3.5.2        tidyverse_2.0.0     
[25] workflowr_1.7.1     

loaded via a namespace (and not attached):
  [1] splines_4.4.2                          
  [2] later_1.4.2                            
  [3] BiocIO_1.16.0                          
  [4] bitops_1.0-9                           
  [5] ggplotify_0.1.2                        
  [6] R.oo_1.27.1                            
  [7] XML_3.99-0.18                          
  [8] rpart_4.1.24                           
  [9] lifecycle_1.0.4                        
 [10] rstatix_0.7.2                          
 [11] rprojroot_2.1.1                        
 [12] vroom_1.6.5                            
 [13] processx_3.8.6                         
 [14] lattice_0.22-7                         
 [15] crosstalk_1.2.2                        
 [16] backports_1.5.0                        
 [17] magrittr_2.0.3                         
 [18] Hmisc_5.2-3                            
 [19] sass_0.4.10                            
 [20] rmarkdown_2.29                         
 [21] jquerylib_0.1.4                        
 [22] yaml_2.3.10                            
 [23] plotrix_3.8-4                          
 [24] httpuv_1.6.16                          
 [25] ggtangle_0.0.7                         
 [26] cowplot_1.2.0                          
 [27] DBI_1.2.3                              
 [28] RColorBrewer_1.1-3                     
 [29] abind_1.4-8                            
 [30] zlibbioc_1.52.0                        
 [31] R.utils_2.13.0                         
 [32] RCurl_1.98-1.17                        
 [33] yulab.utils_0.2.1                      
 [34] nnet_7.3-20                            
 [35] rappdirs_0.3.3                         
 [36] git2r_0.36.2                           
 [37] GenomeInfoDbData_1.2.13                
 [38] enrichplot_1.26.6                      
 [39] tidytree_0.4.6                         
 [40] codetools_0.2-20                       
 [41] DelayedArray_0.32.0                    
 [42] DOSE_4.0.1                             
 [43] tidyselect_1.2.1                       
 [44] aplot_0.2.8                            
 [45] UCSC.utils_1.2.0                       
 [46] farver_2.1.2                           
 [47] matrixStats_1.5.0                      
 [48] base64enc_0.1-3                        
 [49] GenomicAlignments_1.42.0               
 [50] jsonlite_2.0.0                         
 [51] Formula_1.2-5                          
 [52] tools_4.4.2                            
 [53] treeio_1.30.0                          
 [54] TxDb.Hsapiens.UCSC.hg19.knownGene_3.2.2
 [55] Rcpp_1.1.0                             
 [56] glue_1.8.0                             
 [57] gridExtra_2.3                          
 [58] SparseArray_1.6.2                      
 [59] xfun_0.52                              
 [60] qvalue_2.38.0                          
 [61] MatrixGenerics_1.18.1                  
 [62] withr_3.0.2                            
 [63] fastmap_1.2.0                          
 [64] boot_1.3-32                            
 [65] callr_3.7.6                            
 [66] caTools_1.18.3                         
 [67] digest_0.6.37                          
 [68] timechange_0.3.0                       
 [69] R6_2.6.1                               
 [70] gridGraphics_0.5-1                     
 [71] seqPattern_1.38.0                      
 [72] colorspace_2.1-1                       
 [73] Cairo_1.6-5                            
 [74] GO.db_3.20.0                           
 [75] gtools_3.9.5                           
 [76] dichromat_2.0-0.1                      
 [77] RSQLite_2.4.3                          
 [78] R.methodsS3_1.8.2                      
 [79] utf8_1.2.6                             
 [80] generics_0.1.4                         
 [81] data.table_1.17.8                      
 [82] httr_1.4.7                             
 [83] htmlwidgets_1.6.4                      
 [84] S4Arrays_1.6.0                         
 [85] whisker_0.4.1                          
 [86] pkgconfig_2.0.3                        
 [87] gtable_0.3.6                           
 [88] blob_1.2.4                             
 [89] impute_1.80.0                          
 [90] XVector_0.46.0                         
 [91] htmltools_0.5.8.1                      
 [92] carData_3.0-5                          
 [93] pwr_1.3-0                              
 [94] fgsea_1.32.4                           
 [95] scales_1.4.0                           
 [96] Biobase_2.66.0                         
 [97] png_0.1-8                              
 [98] ggfun_0.2.0                            
 [99] knitr_1.50                             
[100] rstudioapi_0.17.1                      
[101] tzdb_0.5.0                             
[102] reshape2_1.4.4                         
[103] rjson_0.2.23                           
[104] checkmate_2.3.3                        
[105] nlme_3.1-168                           
[106] curl_7.0.0                             
[107] zoo_1.8-14                             
[108] cachem_1.1.0                           
[109] KernSmooth_2.23-26                     
[110] vipor_0.4.7                            
[111] parallel_4.4.2                         
[112] foreign_0.8-90                         
[113] AnnotationDbi_1.68.0                   
[114] ggrastr_1.0.2                          
[115] restfulr_0.0.16                        
[116] pillar_1.11.0                          
[117] vctrs_0.6.5                            
[118] gplots_3.2.0                           
[119] ggpubr_0.6.1                           
[120] promises_1.3.3                         
[121] car_3.1-3                              
[122] cluster_2.1.8.1                        
[123] beeswarm_0.4.0                         
[124] htmlTable_2.4.3                        
[125] evaluate_1.0.5                         
[126] GenomicFeatures_1.58.0                 
[127] cli_3.6.5                              
[128] compiler_4.4.2                         
[129] Rsamtools_2.22.0                       
[130] rlang_1.1.6                            
[131] crayon_1.5.3                           
[132] labeling_0.4.3                         
[133] ps_1.9.1                               
[134] ggbeeswarm_0.7.2                       
[135] getPass_0.2-4                          
[136] plyr_1.8.9                             
[137] fs_1.6.6                               
[138] stringi_1.8.7                          
[139] gridBase_0.4-7                         
[140] BiocParallel_1.40.2                    
[141] Biostrings_2.74.1                      
[142] lazyeval_0.2.2                         
[143] GOSemSim_2.32.0                        
[144] Matrix_1.7-3                           
[145] BSgenome_1.74.0                        
[146] hms_1.1.3                              
[147] patchwork_1.3.2                        
[148] bit64_4.6.0-1                          
[149] KEGGREST_1.46.0                        
[150] SummarizedExperiment_1.36.0            
[151] broom_1.0.9                            
[152] igraph_2.1.4                           
[153] memoise_2.0.1                          
[154] bslib_0.9.0                            
[155] ggtree_3.14.0                          
[156] fastmatch_1.1-6                        
[157] bit_4.6.0                              
[158] ape_5.8-1