Anti-PIAS3 Antibody Picoband® Fluoro488 Conjugated

E3 SUMO-protein ligase PIAS3 is an enzyme that in humans is encoded by the PIAS3 gene. This gene encodes a member of the PIAS [protein inhibitor of activated STAT (signal transducer and activator of transcription) ] family of transcriptional modulators. The protein functions as a SUMO (small ubiquitin-like modifier) -E3 ligase which catalyzes the covalent attachment of a SUMO protein to specific target substrates. It ly binds to several transcription factors and either blocks or enhances their activity. Alternatively spliced transcript variants of this gene have been identified, but the full-length nature of some of these variants has not been determined.

A synthetic peptide corresponding to a sequence at the N-terminus of human PIAS3, which shares 97.6% amino acid (aa) sequence identity with both mouse and rat PIAS3.

Cell Biology, Co-Activators/Co-Repressors, Epigenetics and Nuclear Signaling, Nuclear Receptors, Nuclear Signaling Pathways, Proteasome / Ubiquitin, Proteolysis/Ubiquitin, Transcription, Transcription Factors, Ubiquitin & Ubiquitin Like Modifiers

Functions as an E3-type small ubiquitin-like modifier (SUMO) ligase, stabilizing the interaction between UBE2I and the substrate, and as a SUMO-tethering factor. Plays a crucial role as a transcriptional coregulation in various cellular pathways, including the STAT pathway and the steroid hormone signaling pathway. Involved in regulating STAT3 signaling via inhibiting STAT3 DNA-binding and suppressing cell growth. Enhances the sumoylation of MTA1 and may participate in its paralog-selective sumoylation (PubMed:21965678, PubMed:9388184) . Sumoylates CCAR2 which promotes its interaction with SIRT1 (PubMed:25406032) . Diminishes the sumoylation of ZFHX3 by preventing the colocalization of ZFHX3 with SUMO1 in the nucleus (PubMed:24651376) .

1. Entrez Gene: PIAS3 protein inhibitor of activated STAT, 3. 2. Ueki N, Seki N, Yano K, Saito T, Masuho Y, Muramatsu M (June 1999) . Isolation and chromosomal assignment of a human gene encoding protein inhibitor of activated STAT3 (PIAS3) . Journal of Human Genetics. 44 (3) : 193–6.