Class E basic helix-loop-helix protein 74 ; bHLHe74 ; Protein Hin-2 ; RIP160 ; Renal carcinoma antigen NY-REN-52 ; Steroid receptor coactivator 1 ; SRC-1 ; BHLHE74 ; SRC1
Categories
Elisa
Function
Nuclear receptor coactivator that directly binds nuclear receptors and stimulates the transcriptional activities in a hormone-dependent fashion. Involved in the coactivation of different nuclear receptors, such as for steroids (PGR, GR and ER), retinoids (RXRs), thyroid hormone (TRs) and prostanoids (PPARs). Also involved in coactivation mediated by STAT3, STAT5A, STAT5B and STAT6 transcription factors. Displays histone acetyltransferase activity toward H3 and H4; the relevance of such activity remains however unclear. Plays a central role in creating multisubunit coactivator complexes that act via remodeling of chromatin, and possibly acts by participating in both chromatin remodeling and recruitment of general transcription factors. Required with NCOA2 to control energy balance between white and brown adipose tissues. Required for mediating steroid hormone response. Isoform 2 has a higher thyroid hormone-dependent transactivation activity than isoform 1 and isoform 3.
Specificity
Natural and recombinant Human Nuclear receptor coactivator 1
Interacts with the methyltransferase CARM1 (By similarity). Interacts with NCOA6 and NCOA2. Interacts with the FDL motif of STAT5A and STAT5B. Interacts with the LXXLL motif of STAT6. Interacts with STAT3 following IL-6 stimulation. Interacts with the basal transcription factor GTF2B. Interacts with the histone acetyltransferases EP300 and CREBBP. Interacts with PCAF, COPS5, NR3C1 and TTLL5/STAMP. Interacts with PSMB9. Interacts with UBE2L3; they functionally interact to regulate progesterone receptor transcriptional activity. Interacts with PRMT2.