2PP2A antibody, I2PP2A antibody, IGAAD antibody, IPP2A2 antibody, PHAPII antibody, TAF-I antibody, TAF-IBETA antibody, 2610030F17Rik antibody, 5730420M11Rik antibody, AA407739 antibody, I-2PP2A antibody, StF-IT-1 antibody, 2pp2a antibody, i2pp2a antibody, igaad antibody, ipp2a2 antibody, phapii antibody, set antibody, set-a antibody, set-b antibody, taf-ibeta antibody, wu:fb30g11 antibody, wu:fd16c08 antibody, SET nuclear proto-oncogene antibody, SET nuclear oncogene antibody, SET translocation antibody, SET nuclear proto-oncogene L homeolog antibody, SET nuclear proto-oncogene b antibody, SET antibody, Set antibody, LOC403555 antibody, set.L antibody, setb antibody
背景
SET belongs to a family of multitasking protein, involved in apoptosis, transcription, nucleosome assembly and histone binding. There are two named isoforms produced by alternative splicing: Isoform 1 and Isoform 2. Isoform 2 anti-apoptotic activity is mediated by inhibition of the GZMA-activated DNase, NME1. In the course of cytotoxic T-lymphocyte (CTL)-induced apoptosis, GZMA cleaves SET, disrupting its binding to NME1 and releasing NME1 inhibition. Isoform 1 and isoform 2 are potent inhibitors of protein phosphatase 2A. Isoform 1 and isoform 2 inhibit EP300/CREBBP and PCAF-mediated acetylation of histones (HAT) and nucleosomes, most probably by masking the accessibility of lysines of histones to the acetylases. The predominant target for inhibition is histone H4. HAT inhibition leads to silencing of HAT-dependent transcription and prevents active demethylation of DNA. Both isoforms stimulate DNA replication of the adenovirus genome complexed with viral core proteins, however, isoform 2 specific activity is higher. Isoform 1 and isoform 2 interact directly with each other and with ANP32A within the tripartite INHAT (inhibitor of acetyltransferases) complex. A chromosomal aberration involving SET is found in some cases of acute undifferentiated leukemia (AUL). Translocation t(6,9)(q21,q34.1) with NUP214/CAN.Synonyms: I-2PP2A, IGAAD, Inhibitor of granzyme A-activated DNase, PHAPII, Phosphatase 2A inhibitor I2PP2A, TAF-I, Template-activating factor I