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| | ==Solution structure of Sds3 in complex with Sin3A== | | ==Solution structure of Sds3 in complex with Sin3A== |
| - | <StructureSection load='2n2h' size='340' side='right'caption='[[2n2h]], [[NMR_Ensembles_of_Models | 20 NMR models]]' scene=''> | + | <StructureSection load='2n2h' size='340' side='right'caption='[[2n2h]]' scene=''> |
| | == Structural highlights == | | == Structural highlights == |
| - | <table><tr><td colspan='2'>[[2n2h]] is a 2 chain structure with sequence from [https://en.wikipedia.org/wiki/Lk3_transgenic_mice Lk3 transgenic mice]. Full experimental information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2N2H OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=2N2H FirstGlance]. <br> | + | <table><tr><td colspan='2'>[[2n2h]] is a 2 chain structure with sequence from [https://en.wikipedia.org/wiki/Mus_musculus Mus musculus]. Full experimental information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2N2H OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=2N2H FirstGlance]. <br> |
| - | </td></tr><tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">Suds3, Sds3 ([https://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=10090 LK3 transgenic mice]), Sin3a, Kiaa4126 ([https://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=10090 LK3 transgenic mice])</td></tr> | + | </td></tr><tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=2n2h FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2n2h OCA], [https://pdbe.org/2n2h PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=2n2h RCSB], [https://www.ebi.ac.uk/pdbsum/2n2h PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=2n2h ProSAT]</span></td></tr> |
| - | <tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=2n2h FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2n2h OCA], [https://pdbe.org/2n2h PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=2n2h RCSB], [https://www.ebi.ac.uk/pdbsum/2n2h PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=2n2h ProSAT]</span></td></tr> | + | |
| | </table> | | </table> |
| | == Function == | | == Function == |
| - | [[https://www.uniprot.org/uniprot/SDS3_MOUSE SDS3_MOUSE]] Regulatory protein which represses transcription and augments histone deacetylase activity of HDAC1. May have a potential role in tumor suppressor pathways through regulation of apoptosis. May function in the assembly and/or enzymatic activity of the mSin3A corepressor complex or in mediating interactions between the complex and other regulatory complexes (By similarity). [[https://www.uniprot.org/uniprot/SIN3A_MOUSE SIN3A_MOUSE]] Acts as a transcriptional repressor. Corepressor for REST. Interacts with MXI1 to repress MYC responsive genes and antagonize MYC oncogenic activities. Also interacts with MXD1-MAX heterodimers to repress transcription by tethering SIN3A to DNA. Acts cooperatively with OGT to repress transcription in parallel with histone deacetylation.<ref>PMID:8649810</ref> <ref>PMID:7889570</ref> <ref>PMID:10734093</ref>
| + | [https://www.uniprot.org/uniprot/SDS3_MOUSE SDS3_MOUSE] Regulatory protein which represses transcription and augments histone deacetylase activity of HDAC1. May have a potential role in tumor suppressor pathways through regulation of apoptosis. May function in the assembly and/or enzymatic activity of the mSin3A corepressor complex or in mediating interactions between the complex and other regulatory complexes (By similarity). |
| | <div style="background-color:#fffaf0;"> | | <div style="background-color:#fffaf0;"> |
| | == Publication Abstract from PubMed == | | == Publication Abstract from PubMed == |
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| | </StructureSection> | | </StructureSection> |
| | [[Category: Large Structures]] | | [[Category: Large Structures]] |
| - | [[Category: Lk3 transgenic mice]] | + | [[Category: Mus musculus]] |
| - | [[Category: Clark, M]] | + | [[Category: Clark M]] |
| - | [[Category: Radhakrishnan, I]] | + | [[Category: Radhakrishnan I]] |
| - | [[Category: Corepressor complex]]
| + | |
| - | [[Category: Histone deacetylase complex]]
| + | |
| - | [[Category: Protein binding]]
| + | |
| - | [[Category: Transcription]]
| + | |
| - | [[Category: Transcription repression]]
| + | |
| Structural highlights
Function
SDS3_MOUSE Regulatory protein which represses transcription and augments histone deacetylase activity of HDAC1. May have a potential role in tumor suppressor pathways through regulation of apoptosis. May function in the assembly and/or enzymatic activity of the mSin3A corepressor complex or in mediating interactions between the complex and other regulatory complexes (By similarity).
Publication Abstract from PubMed
Acetylation is correlated with chromatin decondensation and transcriptional activation, but its regulation by histone deacetylase (HDAC)-bearing corepressor complexes is poorly understood. Here, we describe the mechanism of assembly of the mammalian Sin3L/Rpd3L complex facilitated by Sds3, a conserved subunit deemed critical for proper assembly. Sds3 engages a globular, helical region of the HDAC interaction domain (HID) of the scaffolding protein Sin3A through a bipartite motif comprising a helix and an adjacent extended segment. Sds3 dimerizes through not only one of the predicted coiled-coil motifs but also, the segment preceding it, forming an approximately 150-A-long antiparallel dimer. Contrary to previous findings in yeast, Sin3A rather than Sds3 functions in recruiting HDAC1 into the complex by engaging the latter through a highly conserved segment adjacent to the helical HID subdomain. In the resulting model for the ternary complex, the two copies of the HDACs are situated distally and dynamically because of a natively unstructured linker connecting the dimerization domain and the Sin3A interaction domain of Sds3; these features contrast with the static organization described previously for the NuRD (nucleosome remodeling and deacetylase) complex. The Sds3 linker features several conserved basic residues that could potentially maintain the complex on chromatin by nonspecific interactions with DNA after initial recruitment by sequence-specific DNA-binding repressors.
Structural insights into the assembly of the histone deacetylase-associated Sin3L/Rpd3L corepressor complex.,Clark MD, Marcum R, Graveline R, Chan CW, Xie T, Chen Z, Ding Y, Zhang Y, Mondragon A, David G, Radhakrishnan I Proc Natl Acad Sci U S A. 2015 Jun 29. pii: 201504021. PMID:26124119[1]
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.
References
- ↑ Clark MD, Marcum R, Graveline R, Chan CW, Xie T, Chen Z, Ding Y, Zhang Y, Mondragon A, David G, Radhakrishnan I. Structural insights into the assembly of the histone deacetylase-associated Sin3L/Rpd3L corepressor complex. Proc Natl Acad Sci U S A. 2015 Jun 29. pii: 201504021. PMID:26124119 doi:http://dx.doi.org/10.1073/pnas.1504021112
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