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edit Sin3A-associated protein, 30kDa Identifiers Symbols SAP30; External IDs OMIM: 603378 MGI: 1929129 HomoloGene: 2869 GeneCards: SAP30 Gene Gene Ontology Molecular function • transcription corepressor activity • protein binding Cellular component • histone deacetylase complex • nucleus Biological process • transcription • regulation of transcription, DNA-dependent Sources: Amigo / QuickGO RNA expression pattern More reference expression data Orthologs Species Human Mouse Entrez 8819 60406 Ensembl ENSG00000164105 ENSMUSG00000031609 UniProt O75446 O88574 RefSeq (mRNA) NM_003864 NM_021788 RefSeq (protein) NP_003855 NP_068560 Location (UCSC) Chr 4: 174.53 - 174.54 Mb Chr 8: 60.37 - 60.38 Mb PubMed search [1] [2] Sin3A-associated protein, 30kDa, also known as SAP30, is a protein which in humans is encoded by the SAP30 gene.[1] Contents 1 Function 2 Interactions 3 References 4 Further reading Function Histone acetylation 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 SIN3A, SAP18, HDAC1, HDAC2, RbAp46, RbAp48, and other polypeptides. This complex is active in deacetylating core histone octamers, but inactive in deacetylating nucleosomal histones. A pseudogene of this gene is located on chromosome 3.[1] Mammals have one paralog of SAP30, named SAP30-like (SAP30L), which shares 70 % sequence identity with SAP30.[2] SAP30 and SAP30L together constitute a well-conserved SAP30 protein family. Also SAP30L interacts with several components of the Sin3A corepressor complex and induces transcriptional repression via recruitment of Sin3A and histone deacetylases.[3] Proteins of the SAP30 family (SAP30 proteins) have a functional nucleolar localization signal and they are able to target Sin3A to the nucleolus.[3] SAP30 proteins have sequence-independent contact with DNA by their N-terminal zinc-dependent module and their acidic central region contributes to histone and nucleosome interactions. The DNA binding of SAP30 proteins is regulated by the nuclear signalling lipids, phosphoinositides (PI).[4] SAP30 proteins provide the first example in which the DNA and PIs seem to stand in a mutually antagonizing interrelationship in regard to their interaction with zinc finger proteins and thus exemplifies the molecular mechanism how these lipids can contribute for gene regulation.[4][5] Interactions SAP30 has been shown to interact with HDAC1,[6][7][8][9][10][11] Histone deacetylase 2,[7][8][11] SIN3A,[12][7][8][10][11][13] RBBP7,[7][8][11] Nuclear receptor co-repressor 1,[14][13] RBBP4,[7][8][11] ING1[11] and YY1.[6] References ^ a b "Entrez Gene: SAP30 Sin3A-associated protein, 30kDa". http://www.ncbi.nlm.nih.gov/sites/entrez?Db=gene&Cmd=ShowDetailView&TermToSearch=8819.  ^ Lindfors K, Viiri KM, Niittynen M, Heinonen TY, Mäki M, Kainulainen H (December 2003). "TGF-beta induces the expression of SAP30L, a novel nuclear protein". BMC Genomics 4: 53. doi:10.1186/1471-2164-4-53. PMC 319701. PMID 14680513.  ^ a b Viiri KM, Korkeamäki H, Kukkonen MK, Nieminen LK, Lindfors K, Peterson P, Mäki M, Kainulainen H, Lohi O (2006). "SAP30L interacts with members of the Sin3A corepressor complex and targets Sin3A to the nucleolus". Nucleic Acids Res. 34 (11): 3288–98. doi:10.1093/nar/gkl401. PMC 1500868. PMID 16820529.  ^ a b Viiri KM, Jänis J, Siggers T, Heinonen TY, Valjakka J, Bulyk ML, Mäki M, Lohi O (January 2009). "DNA-binding and -bending activities of SAP30L and SAP30 are mediated by a zinc-dependent module and monophosphoinositides". Mol. Cell. Biol. 29 (2): 342–56. doi:10.1128/MCB.01213-08. PMC 2612513. PMID 19015240.  ^ http://acta.uta.fi/teos.php?id=11179 ^ a b Huang, Nu En; Lin Ching Hui, Lin Young Sun, Yu Winston C Y (Jun. 2003). "Modulation of YY1 activity by SAP30". Biochem. Biophys. Res. Commun. (United States) 306 (1): 267–75. doi:10.1016/S0006-291X(03)00966-5. ISSN 0006-291X. PMID 12788099.  ^ a b c d e Zhang, Y; Sun Z W, Iratni R, Erdjument-Bromage H, Tempst P, Hampsey M, Reinberg D (Jun. 1998). "SAP30, a novel protein conserved between human and yeast, is a component of a histone deacetylase complex". Mol. Cell (UNITED STATES) 1 (7): 1021–31. doi:10.1016/S1097-2765(00)80102-1. ISSN 1097-2765. PMID 9651585.  ^ a b c d e Zhang, Y; Ng H H, Erdjument-Bromage H, Tempst P, Bird A, Reinberg D (Aug. 1999). "Analysis of the NuRD subunits reveals a histone deacetylase core complex and a connection with DNA methylation". Genes Dev. (UNITED STATES) 13 (15): 1924–35. doi:10.1101/gad.13.15.1924. ISSN 0890-9369. PMC 316920. PMID 10444591.  ^ Swanson, Kurt A; Knoepfler Paul S, Huang Kai, Kang Richard S, Cowley Shaun M, Laherty Carol D, Eisenman Robert N, Radhakrishnan Ishwar (Aug. 2004). "HBP1 and Mad1 repressors bind the Sin3 corepressor PAH2 domain with opposite helical orientations". Nat. Struct. Mol. Biol. (United States) 11 (8): 738–46. doi:10.1038/nsmb798. ISSN 1545-9993. PMID 15235594.  ^ a b Yochum, G S; Ayer D E (Jul. 2001). "Pf1, a novel PHD zinc finger protein that links the TLE corepressor to the mSin3A-histone deacetylase complex". Mol. Cell. Biol. (United States) 21 (13): 4110–8. doi:10.1128/MCB.21.13.4110-4118.2001. ISSN 0270-7306. PMC 87072. PMID 11390640.  ^ a b c d e f Kuzmichev, A; Zhang Y, Erdjument-Bromage H, Tempst P, Reinberg D (Feb. 2002). "Role of the Sin3-histone deacetylase complex in growth regulation by the candidate tumor suppressor p33(ING1)". Mol. Cell. Biol. (United States) 22 (3): 835–48. doi:10.1128/MCB.22.3.835-848.2002. ISSN 0270-7306. PMC 133546. PMID 11784859.  ^ Fleischer, Tracey C; Yun Ui Jeong, Ayer Donald E (May. 2003). "Identification and characterization of three new components of the mSin3A corepressor complex". Mol. Cell. Biol. (United States) 23 (10): 3456–67. doi:10.1128/MCB.23.10.3456-3467.2003. ISSN 0270-7306. PMC 164750. PMID 12724404.  ^ a b Laherty, C D; Billin A N, Lavinsky R M, Yochum G S, Bush A C, Sun J M, Mullen T M, Davie J R, Rose D W, Glass C K, Rosenfeld M G, Ayer D E, Eisenman R N (Jul. 1998). "SAP30, a component of the mSin3 corepressor complex involved in N-CoR-mediated repression by specific transcription factors". Mol. Cell (UNITED STATES) 2 (1): 33–42. doi:10.1016/S1097-2765(00)80111-2. ISSN 1097-2765. PMID 9702189.  ^ Underhill, C; Qutob M S, Yee S P, Torchia J (Dec. 2000). "A novel nuclear receptor corepressor complex, N-CoR, contains components of the mammalian SWI/SNF complex and the corepressor KAP-1". J. Biol. Chem. (UNITED STATES) 275 (51): 40463–70. doi:10.1074/jbc.M007864200. ISSN 0021-9258. PMID 11013263.  Further reading Ayer DE, Lawrence QA, Eisenman RN (1995). "Mad-Max transcriptional repression is mediated by ternary complex formation with mammalian homologs of yeast repressor Sin3.". Cell 80 (5): 767–76. doi:10.1016/0092-8674(95)90355-0. PMID 7889570.  Zhang Y, Iratni R, Erdjument-Bromage H, et al. (1997). "Histone deacetylases and SAP18, a novel polypeptide, are components of a human Sin3 complex.". Cell 89 (3): 357–64. doi:10.1016/S0092-8674(00)80216-0. PMID 9150135.  Zhang Y, Sun ZW, Iratni R, et al. (1998). "SAP30, a novel protein conserved between human and yeast, is a component of a histone deacetylase complex.". Mol. Cell 1 (7): 1021–31. doi:10.1016/S1097-2765(00)80102-1. PMID 9651585.  Laherty CD, Billin AN, Lavinsky RM, et al. (1998). "SAP30, a component of the mSin3 corepressor complex involved in N-CoR-mediated repression by specific transcription factors.". Mol. Cell 2 (1): 33–42. doi:10.1016/S1097-2765(00)80111-2. PMID 9702189.  Zhang Y, LeRoy G, Seelig HP, et al. (1998). "The dermatomyositis-specific autoantigen Mi2 is a component of a complex containing histone deacetylase and nucleosome remodeling activities.". Cell 95 (2): 279–89. doi:10.1016/S0092-8674(00)81758-4. PMID 9790534.  Tong JK, Hassig CA, Schnitzler GR, et al. (1998). "Chromatin deacetylation by an ATP-dependent nucleosome remodelling complex.". Nature 395 (6705): 917–21. doi:10.1038/27699. PMID 9804427.  Hsieh JJ, Zhou S, Chen L, et al. (1999). "CIR, a corepressor linking the DNA binding factor CBF1 to the histone deacetylase complex.". Proc. Natl. Acad. Sci. U.S.A. 96 (1): 23–8. doi:10.1073/pnas.96.1.23. PMC 15086. PMID 9874765.  Boutell JM, Thomas P, Neal JW, et al. (2000). "Aberrant interactions of transcriptional repressor proteins with the Huntington's disease gene product, huntingtin.". Hum. Mol. Genet. 8 (9): 1647–55. doi:10.1093/hmg/8.9.1647. PMID 10441327.  Zhang Y, Ng HH, Erdjument-Bromage H, et al. (1999). "Analysis of the NuRD subunits reveals a histone deacetylase core complex and a connection with DNA methylation.". Genes Dev. 13 (15): 1924–35. doi:10.1101/gad.13.15.1924. PMC 316920. PMID 10444591.  Krithivas A, Young DB, Liao G, et al. (2000). "Human herpesvirus 8 LANA interacts with proteins of the mSin3 corepressor complex and negatively regulates Epstein-Barr virus gene expression in dually infected PEL cells.". J. Virol. 74 (20): 9637–45. doi:10.1128/JVI.74.20.9637-9645.2000. PMC 112396. PMID 11000236.  Underhill C, Qutob MS, Yee SP, Torchia J (2001). "A novel nuclear receptor corepressor complex, N-CoR, contains components of the mammalian SWI/SNF complex and the corepressor KAP-1.". J. Biol. Chem. 275 (51): 40463–70. doi:10.1074/jbc.M007864200. PMID 11013263.  Humphrey GW, Wang Y, Russanova VR, et al. (2001). "Stable histone deacetylase complexes distinguished by the presence of SANT domain proteins CoREST/kiaa0071 and Mta-L1.". J. Biol. Chem. 276 (9): 6817–24. doi:10.1074/jbc.M007372200. PMID 11102443.  Skowyra D, Zeremski M, Neznanov N, et al. (2001). "Differential association of products of alternative transcripts of the candidate tumor suppressor ING1 with the mSin3/HDAC1 transcriptional corepressor complex.". J. Biol. Chem. 276 (12): 8734–9. doi:10.1074/jbc.M007664200. PMID 11118440.  Yochum GS, Ayer DE (2001). "Pf1, a novel PHD zinc finger protein that links the TLE corepressor to the mSin3A-histone deacetylase complex.". Mol. Cell. Biol. 21 (13): 4110–8. doi:10.1128/MCB.21.13.4110-4118.2001. PMC 87072. PMID 11390640.  Kuzmichev A, Zhang Y, Erdjument-Bromage H, et al. (2002). "Role of the Sin3-histone deacetylase complex in growth regulation by the candidate tumor suppressor p33(ING1).". Mol. Cell. Biol. 22 (3): 835–48. doi:10.1128/MCB.22.3.835-848.2002. PMC 133546. PMID 11784859.  Saito M, Ishikawa F (2002). "The mCpG-binding domain of human MBD3 does not bind to mCpG but interacts with NuRD/Mi2 components HDAC1 and MTA2.". J. Biol. Chem. 277 (38): 35434–9. doi:10.1074/jbc.M203455200. PMID 12124384.  Strausberg RL, Feingold EA, Grouse LH, et al. (2003). "Generation and initial analysis of more than 15,000 full-length human and mouse cDNA sequences.". Proc. Natl. Acad. Sci. U.S.A. 99 (26): 16899–903. doi:10.1073/pnas.242603899. PMC 139241. PMID 12477932.  Wysocka J, Myers MP, Laherty CD, et al. (2003). "Human Sin3 deacetylase and trithorax-related Set1/Ash2 histone H3-K4 methyltransferase are tethered together selectively by the cell-proliferation factor HCF-1.". Genes Dev. 17 (7): 896–911. doi:10.1101/gad.252103. PMC 196026. PMID 12670868.  Huang NE, Lin CH, Lin YS, Yu WC (2003). "Modulation of YY1 activity by SAP30.". Biochem. Biophys. Res. Commun. 306 (1): 267–75. doi:10.1016/S0006-291X(03)00966-5. PMID 12788099.  Sironi E, Cerri A, Tomasini D, et al. (2004). "Loss of heterozygosity on chromosome 4q32-35 in sporadic basal cell carcinomas: evidence for the involvement of p33ING2/ING1L and SAP30 genes.". J. Cutan. Pathol. 31 (4): 318–22. doi:10.1111/j.0303-6987.2004.0187.x. PMID 15005689.  This article on a gene on chromosome 4 is a stub. You can help Wikipedia by expanding it.v · d · e