数据与复现生物信息与基因组学FreedomIntelligence/OpenClaw-Medical-Skills数据与复现
BI

bio-atac-seq-nucleosome-positioning

维护者 FreedomIntelligence · 最近更新 2026年4月1日

Extract nucleosome positions from ATAC-seq data using NucleoATAC, ATACseqQC, and fragment analysis. Use when analyzing chromatin organization, identifying nucleosome-free regions at promoters, or characterizing nucleosome occupancy patterns from ATAC-seq fragment size distributions.

OpenClawNanoClaw分析处理复现实验bio-atac-seq-nucleosome-positioning🧬 bioinformatics (gptomics bio-* suite)bioinformatics — epigenomics & chromatinextract

原始来源

FreedomIntelligence/OpenClaw-Medical-Skills

https://github.com/FreedomIntelligence/OpenClaw-Medical-Skills/tree/main/skills/bio-atac-seq-nucleosome-positioning

维护者
FreedomIntelligence
许可
MIT
最近更新
2026年4月1日

技能摘要

来自 SKILL.md 的关键信息

2 min

核心说明

  • CLI:nucleoatac run --bed peaks.bed --bam atac.bam --fasta ref.fa。
  • R:ATACseqQC::splitGAlignmentsByCut() ,用于 fragment separation。
  • 映射 nucleosome positions ,面向 ATAC-seq" → Separate nucleosome-free 、 mono-nucleosome fragments by size,then call nucleosome center positions 、 occupancy scores. CLI:nucleoatac run --bed peaks.bed --bam atac.bam --fasta ref.fa R:ATACseqQC::splitGAlignmentsByCut() ,用于 fragment separation。
  • 提取 nucleosome positions 、 occupancy ,面向 ATAC-seq fragment size patterns。
  • < 100 bp:Nucleosome-free regions (NFR)。

原始文档

SKILL.md 摘录

Fragment Size Distribution

library(ATACseqQC)
library(Rsamtools)

## Fragment size distribution

fragSize <- fragSizeDist(bamfile, 'sample')

## Get TSS regions

txs <- transcripts(TxDb.Hsapiens.UCSC.hg38.knownGene)
tss <- promoters(txs, upstream=1000, downstream=1000)

适用场景

  • 适合在analyzing chromatin organization,identifying nucleosome-free regions at promoters,或 characterizing nucleosome occupancy patterns ,面向 ATAC-seq fragment size distributions时使用。

不适用场景

  • Do not rely on this catalog entry alone ,用于 installation 或 maintenance details。

上游相关技能

  • atac-seq/atac-peak-calling - Call accessibility peaks
  • atac-seq/atac-qc - Quality control metrics
  • atac-seq/footprinting - TF footprinting
  • chip-seq/peak-annotation - Annotate nucleosome positions

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