This gene encodes a member of the protein inhibitor of activated STAT family, which function as SUMO E3 ligases and play important roles in many cellular processes by mediating the sumoylation of target proteins. Alternatively spliced transcript variants encoding multiple isoforms have been observed for this gene. Isoforms of the encoded protein enhance the sumoylation of specific target proteins including the p53 tumor suppressor protein, c-Jun, and the androgen receptor. A pseudogene of this gene is located on the short arm of chromosome 4. The symbol MIZ1 has also been associated with ZBTB17 which is a different gene located on chromosome 1. [provided by RefSeq, Aug 2017]
Transcription factors with Perturb-seq knockdown data for PIAS2. 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 = PIAS2 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 PIAS2, 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 |
|---|---|---|---|---|
| chr18:46,657,856–46,658,572 | 259.1 kb | Distal (>10kb) Multiome | 342 | |
| chr18:46,756,207–46,757,254 | 160.6 kb | Distal (>10kb) Multiome | 210 | |
| chr18:46,916,768–46,918,244 | 36 bp | At TSS Multiome | 715 | |
| chr18:46,946,455–46,947,310 | 29.4 kb | Distal (>10kb) Multiome | 249 | |
| chr18:47,149,543–47,151,037 | 232.9 kb | Distal (>10kb) Multiome | 824 | |
| chr18:47,175,919–47,176,532 | 258.8 kb | Distal (>10kb) Multiome | 731 |
Genomic view of the PIAS2 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.