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==BAZ2A bromodomain in complex with the chemical probe BAZ2-ICR== | ==BAZ2A bromodomain in complex with the chemical probe BAZ2-ICR== | ||
<StructureSection load='7bl8' size='340' side='right'caption='[[7bl8]]' scene=''> | <StructureSection load='7bl8' size='340' side='right'caption='[[7bl8]], [[Resolution|resolution]] 2.50Å' scene=''> | ||
== Structural highlights == | == Structural highlights == | ||
<table><tr><td colspan='2'>Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=7BL8 OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=7BL8 FirstGlance]. <br> | <table><tr><td colspan='2'>[[7bl8]] is a 1 chain structure with sequence from [https://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=7BL8 OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=7BL8 FirstGlance]. <br> | ||
</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=7bl8 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=7bl8 OCA], [https://pdbe.org/7bl8 PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=7bl8 RCSB], [https://www.ebi.ac.uk/pdbsum/7bl8 PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=7bl8 ProSAT]</span></td></tr> | </td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 2.5Å</td></tr> | ||
<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=U1Z:4-[5-(1-methylpyrazol-4-yl)-3-[2-(1-methylpyrazol-4-yl)ethyl]imidazol-4-yl]benzenecarbonitrile'>U1Z</scene></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=7bl8 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=7bl8 OCA], [https://pdbe.org/7bl8 PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=7bl8 RCSB], [https://www.ebi.ac.uk/pdbsum/7bl8 PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=7bl8 ProSAT]</span></td></tr> | |||
</table> | </table> | ||
== Function == | |||
[https://www.uniprot.org/uniprot/BAZ2A_HUMAN BAZ2A_HUMAN] Essential component of the NoRC (nucleolar remodeling complex) complex, a complex that mediates silencing of a fraction of rDNA by recruiting histone-modifying enzymes and DNA methyltransferases, leading to heterochromatin formation and transcriptional silencing. In the complex, it plays a central role by being recruited to rDNA and by targeting chromatin modifying enzymes such as HDAC1, leading to repress RNA polymerase I transcription. Recruited to rDNA via its interaction with TTF1 and its ability to recognize and bind histone H4 acetylated on 'Lys-16' (H4K16ac), leading to deacetylation of H4K5ac, H4K8ac, H4K12ac but not H4K16ac. Specifically binds pRNAs, 150-250 nucleotide RNAs that are complementary in sequence to the rDNA promoter; pRNA-binding is required for heterochromatin formation and rDNA silencing (By similarity). | |||
==See Also== | |||
*[[Bromodomain adjacent to zinc finger 3D structures|Bromodomain adjacent to zinc finger 3D structures]] | |||
__TOC__ | __TOC__ | ||
</StructureSection> | </StructureSection> | ||
[[Category: Homo sapiens]] | |||
[[Category: Large Structures]] | [[Category: Large Structures]] | ||
[[Category: Caflisch A]] | [[Category: Caflisch A]] | ||
Latest revision as of 15:30, 1 February 2024
BAZ2A bromodomain in complex with the chemical probe BAZ2-ICRBAZ2A bromodomain in complex with the chemical probe BAZ2-ICR
Structural highlights
FunctionBAZ2A_HUMAN Essential component of the NoRC (nucleolar remodeling complex) complex, a complex that mediates silencing of a fraction of rDNA by recruiting histone-modifying enzymes and DNA methyltransferases, leading to heterochromatin formation and transcriptional silencing. In the complex, it plays a central role by being recruited to rDNA and by targeting chromatin modifying enzymes such as HDAC1, leading to repress RNA polymerase I transcription. Recruited to rDNA via its interaction with TTF1 and its ability to recognize and bind histone H4 acetylated on 'Lys-16' (H4K16ac), leading to deacetylation of H4K5ac, H4K8ac, H4K12ac but not H4K16ac. Specifically binds pRNAs, 150-250 nucleotide RNAs that are complementary in sequence to the rDNA promoter; pRNA-binding is required for heterochromatin formation and rDNA silencing (By similarity). See Also |
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