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SAP18 is involved in histone acetylation, which plays a key role in the regulation of eukaryotic gene expression. Histone acetylation and deacetylation are catalyzed by multisubunit complexes. The protein encoded by this gene is a component of the histone deacetylase complex, which includes SIN3, SAP30, HDAC1, HDAC2, RbAp46, RbAp48, and other polypeptides. This protein directly interacts with SIN3 and enhances SIN3-mediated transcriptional repression when tethered to the promoter. A pseudogene has been identified on chromosome 2.
18 kDa Sin3-associated polypeptide; 2HOR0202; C530046K05Rik; cell growth inhibiting protein 38; cell growth-inhibiting gene 38 protein; cell growth-inhibiting protein 38; D11Ertd539e; EMegR4; GIG38; histone deacetlyase complex subunit SAP18; histone deacetylase complex subunit SAP18; SAP18; SAP18P; Sin3A associated protein 18; Sin3A associated protein 18kDa; Sin3A-associated protein, 18kDa; Sin3-associated polypeptide 18; sin3-associated polypeptide p18; sin3-associated polypeptide, 18 kDa; sin3-associated polypeptide, 18kDa; sin3-associated polypeptide, p18; Sinbp1
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