This gene encodes one of eight subunits composing COP9 signalosome, a highly conserved protein complex that functions as an important regulator in multiple signaling pathways. The structure and function of COP9 signalosome is similar to that of the 19S regulatory particle of 26S proteasome. COP9 signalosome has been shown to interact with SCF-type E3 ubiquitin ligases and act as a positive regulator of E3 ubiquitin ligases. Two transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Apr 2012]
Transcription factors with Perturb-seq knockdown data for COPS4. The Binding column indicates whether any binding evidence exists for this TF–gene pair (ChIP-seq or motif footprint peaks). The Mean coef is the average Perturb-seq regression coefficient across active gRNAs (positive = COPS4 upregulated upon KD; negative = downregulated). The Outlier column indicates whether this gene is in the top or bottom 5% of all TF knockdown effects.
| TF | Mean coef | Binding | Outlier | TF→Gene link |
|---|
Open chromatin peaks (ATAC-seq) in the genomic neighbourhood of COPS4, linked by TSS proximity or chromatin conformation (Multiome / HiCAR). Each element overlaps at least one TF ChIP-seq binding site — the TFs column shows how many distinct TFs bind that element.
| Accessibility | Element | Dist. to TSS | Link type | TFs |
|---|---|---|---|---|
| chr4:82,739,190–82,739,774 | 295.7 kb | Distal (>10kb) Multiome | 317 | |
| chr4:82,797,244–82,798,074 | 237.8 kb | Distal (>10kb) Multiome | 243 | |
| chr4:82,798,169–82,799,103 | 236.4 kb | Distal (>10kb) Multiome | 368 | |
| chr4:82,890,719–82,891,825 | 143.9 kb | Distal (>10kb) Multiome | 1005 | |
| chr4:82,899,856–82,901,464 | 134.5 kb | Distal (>10kb) Multiome | 977 | |
| chr4:83,010,137–83,011,179 | 24.5 kb | Distal (>10kb) Multiome | 601 | |
| chr4:83,012,161–83,013,775 | 22.2 kb | Distal (>10kb) Multiome | 913 | |
| chr4:83,034,341–83,035,668 | 174 bp | At TSS Multiome | 993 | |
| chr4:83,109,433–83,110,778 | 74.6 kb | Distal (>10kb) Multiome | 591 | |
| chr4:83,283,973–83,285,305 | 249.4 kb | Distal (>10kb) Multiome | 879 | |
| chr4:83,334,415–83,335,295 | 299.7 kb | Distal (>10kb) Multiome | 455 |
Genomic view of the COPS4 locus showing ATAC-seq accessibility and RNA-seq expression across the ESC → DE time course, together with TF binding peaks and element-to-TSS loop connections.