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Class II, major histocompatibility complex, transactivator (HGNC Symbol)
Entrez gene summary
This gene encodes a protein with an acidic transcriptional activation domain, 4 LRRs (leucine-rich repeats) and a GTP binding domain. The protein is located in the nucleus and acts as a positive regulator of class II major histocompatibility complex gene transcription, and is referred to as the ""master control factor"" for the expression of these genes. The protein also binds GTP and uses GTP binding to facilitate its own transport into the nucleus. Once in the nucleus it does not bind DNA but rather uses an intrinsic acetyltransferase (AT) activity to act in a coactivator-like fashion. Mutations in this gene have been associated with bare lymphocyte syndrome type II (also known as hereditary MHC class II deficiency or HLA class II-deficient combined immunodeficiency), increased susceptibility to rheumatoid arthritis, multiple sclerosis, and possibly myocardial infarction. Several transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Nov 2013]
GO:0000122 [negative regulation of transcription from RNA polymerase II promoter] GO:0005515 [protein binding] GO:0005524 [ATP binding] GO:0006954 [inflammatory response] GO:0007568 [aging] GO:0009986 [cell surface] GO:0045348 [positive regulation of MHC class II biosynthetic process] GO:0045944 [positive regulation of transcription from RNA polymerase II promoter] GO:0071257 [cellular response to electrical stimulus] GO:0071346 [cellular response to interferon-gamma] GO:0071360 [cellular response to exogenous dsRNA]
