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HMGN5, an RNA and Nucleosome binding protein required for chromatin de-condensation and gene activation

GSE166103 Homo sapiens (human) ChIP-seq / ATAC-seq (genome binding and open chromatin) 13 samples Submitted 2024/05/08 Platform GPL15433Platform GPL11154
At a glance

ChIP-seq / ATAC-seq (genome binding and open chromatin) · human · 13 samples

What it is
ChIP-seq / ATAC-seq (genome binding and open chromatin)Where proteins bind the genome, or which regions are open and active.
Organism
Homo sapiens (human)
Samples
13 samples: 3 × CLIP_HMGN5 vs 2 × ChIP_HMGN5+ vs 2 × ChIP_HMGN5 vs 2 × CLIP_GFPGroups are read from the sample names, not from the paper. Check the list below.
Data you can get
A processed table (series matrix) and supplementary files from NCBI; the raw sequencing reads from ENA. Which of these hold counts depends on the study, so check the file list.
Summary (written by the submitters)
The packaging of DNA into chromatin and its compaction within cells renders the underlying DNA template un-accessible for processes like transcription, replication and repair. Active mechanisms as chromatin modifying activities or the association with non-coding RNAs can de-condense chromatin, rendering it accessible for the DNA dependent processes.
Read the full summary ↓
High mobility group proteins (HMG) are small architectural chromatin proteins that were shown to contribute to the regulation of chromatin accessibility and condensation. Here we show that HMGN5, a member of the HMGN family is capable to de-compact chromatin and to activate gene expression. We identified and characterized a novel RNA binding domain within HMGN5 that overlaps with its nucleosome binding domain (NBD). HMGN5 binds exclusively to nucleosomes or RNA, suggesting a switching mechanism and different functionalities depending on its binding partner. For this we show that HMGN5 is bound to regulatory regions of the genes that it tends to activate and also is found on the primary transcript of these genes. The results suggest that HMGN5 is switching from the chromatin binding to the RNA binding state after gene activation, potentially improving RNA synthesis. Furthermore, HMGN5 co-localizes and directly interacts with CTCF, suggesting a cooperative role of both proteins in organizing higher order structures of chromatin and active chromatin domains.
This dataset
Download · which file do I need?

Direct links to NCBI and ENA, no account and no request form. Pick by what you want to do: take the small processed table to look, the supplementary files to re-analyse, or the original raw data to start over.

1 · Just have a look

Processed table

The series matrix: one table of values per sample as the submitters processed it. The smallest download, and it opens in Excel or R. Start here to see what the data look like.

2 · Re-analyse it

Supplementary files

The count tables and other files the authors uploaded. Take only the samples you need, or the whole study as GSE166103_RAW.tar (it can run to tens of gigabytes).

3 · Start from the raw reads

Raw sequencing reads

The original FASTQ files, straight from the sequencer, held at ENA. Large, and you align them yourself, so only choose this if you need to re-process the study from scratch.

What the files usually look like: Look for peak files (.bed, .narrowPeak) and signal tracks (.bigWig) among the supplementary files; the raw reads are on ENA.

Also filed as BioProject PRJNA699264 and SRA study SRP304545. Searching any of these in the dataset finder brings you back here.

Study design
3 × CLIP_HMGN5 vs 2 × ChIP_HMGN5+ vs 2 × ChIP_HMGN5 vs 2 × CLIP_GFP

Supports a case/control comparison: 2 samples read as cases, 2 as controls.

How we read this: 4 replicated groups read from 13 sample titles; they account for 9 of them. These groups are guessed from the sample names, not taken from the paper, so check them against the sample list below before relying on them.

Samples in this study
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