The 26S proteasome is a multicatalytic proteinase complex with a highly ordered structure composed of 2 complexes, a 20S core and a 19S regulator. The 20S core is composed of 4 rings of 28 non-identical subunits; 2 rings are composed of 7 alpha subunits and 2 rings are composed of 7 beta subunits. The 19S regulator is composed of a base, which contains 6 ATPase subunits and 2 non-ATPase subunits, and a lid, which contains up to 10 non-ATPase subunits. Proteasomes are distributed throughout eukaryotic cells at a high concentration and cleave peptides in an ATP/ubiquitin-dependent process in a non-lysosomal pathway. An essential function of a modified proteasome, the immunoproteasome, is the processing of class I MHC peptides. This gene encodes one of the ATPase subunits, a member of the triple-A family of ATPases which have a chaperone-like activity. In addition to participation in proteasome functions, this subunit may participate in transcriptional regulation since it has been shown to interact with the thyroid hormone receptor and retinoid X receptor-alpha. Two transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Nov 2010]
Transcription factors with Perturb-seq knockdown data for PSMC5. 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 = PSMC5 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 PSMC5, 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 |
|---|---|---|---|---|
| chr17:63,549,660–63,551,443 | 277.1 kb | Distal (>10kb) Multiome | 1037 | |
| chr17:63,600,715–63,601,423 | 226.5 kb | Distal (>10kb) Multiome | 1122 | |
| chr17:63,621,512–63,623,359 | 205.4 kb | Distal (>10kb) Multiome | 956 | |
| chr17:63,698,705–63,701,428 | 127.3 kb | Distal (>10kb) Multiome | 663 | |
| chr17:63,741,119–63,742,935 | 85.6 kb | Distal (>10kb) Multiome | 1057 | |
| chr17:63,773,179–63,774,727 | 53.7 kb | Distal (>10kb) Multiome | 1169 | |
| chr17:63,826,794–63,828,024 | 66 bp | At TSS Multiome | 1008 | |
| chr17:63,834,919–63,835,138 | 7.5 kb | Proximal (<10kb) | 307 | |
| chr17:63,841,547–63,843,442 | 15.5 kb | Distal (>10kb) Multiome | 1203 | |
| chr17:63,848,836–63,849,566 | 21.8 kb | Distal (>10kb) Multiome | 658 | |
| chr17:63,960,119–63,962,604 | 134.5 kb | Distal (>10kb) Multiome | 445 | |
| chr17:63,998,051–63,998,826 | 170.9 kb | Distal (>10kb) Multiome | 408 |
Genomic view of the PSMC5 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.