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Steroid receptors are ligand-dependent intracellular proteins that stimulate transcription of specific genes by binding to specific DNA sequences following activation by the appropriate hormone. Prior to activation, steroid receptors associate with a number of different proteins in both a stable and transient fashion. Steroid receptor complex proteins include heat shock proteins (HSP70 and HSP90), immunosuppressant binding proteins called immunophilins (the FK506 binding proteins, FKBP52 & FKBP54 and the cyclosporin binding protein, CyP-40) and at least three other proteins termed p23, p60 and p48. p23 along with HSP70, HSP90 and p60, combine with progesterone receptor (PR) as members of a transient intermediate complex. Cloned human p23 encodes a protein of 160 amino acids that is highly conserved between species and shows no homology to previously identified proteins. p23 is a highly acidic phosphoprotein with an aspartic acid-rich C-terminal domain and multiple potential phosphorylation sites. In vitro studies have suggested that p23 binds to HSP90 and is necessary for the binding of HSP90 and CyP-40 to PR. While neither its exact function nor mechanism of action have been identified, p23 appears to be an important factor in PR function.
仅用于科研。不用于诊断过程。未经明确授权不得转售。
蛋白别名: Co chaperone p23; cPGES; cytosolic prostaglandin E synthase; Cytosolic prostaglandin E2 synthase; Hsp90 co chaperone; Hsp90 co-chaperone; Progesterone receptor complex p23; Prostaglandin E synthase 3; prostaglandin E synthase 3 (cytosolic); Telomerase-binding protein p23; unactive progesterone receptor, 23 kD
基因别名: cPGES; P23; PTGES3; TEBP
UniProt ID: (Human) Q15185
Entrez Gene ID: (Human) 10728