3b0d: Difference between revisions
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<StructureSection load='3b0d' size='340' side='right'caption='[[3b0d]], [[Resolution|resolution]] 2.20Å' scene=''> | <StructureSection load='3b0d' size='340' side='right'caption='[[3b0d]], [[Resolution|resolution]] 2.20Å' scene=''> | ||
== Structural highlights == | == Structural highlights == | ||
<table><tr><td colspan='2'>[[3b0d]] is a 4 chain structure with sequence from [https://en.wikipedia.org/wiki/ | <table><tr><td colspan='2'>[[3b0d]] is a 4 chain structure with sequence from [https://en.wikipedia.org/wiki/Gallus_gallus Gallus gallus]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3B0D OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=3B0D FirstGlance]. <br> | ||
</td></tr><tr id=' | </td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 2.197Å</td></tr> | ||
<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=CIT:CITRIC+ACID'>CIT</scene></td></tr> | |||
<tr id=' | |||
<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=3b0d FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3b0d OCA], [https://pdbe.org/3b0d PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=3b0d RCSB], [https://www.ebi.ac.uk/pdbsum/3b0d PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=3b0d 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=3b0d FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3b0d OCA], [https://pdbe.org/3b0d PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=3b0d RCSB], [https://www.ebi.ac.uk/pdbsum/3b0d PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=3b0d ProSAT]</span></td></tr> | ||
</table> | </table> | ||
== Function == | == Function == | ||
[https://www.uniprot.org/uniprot/CENPT_CHICK CENPT_CHICK] Component of the CENPA-NAC (nucleosome-associated) complex, a complex that plays a central role in assembly of kinetochore proteins, mitotic progression and chromosome segregation (By similarity). The CENPA-NAC complex recruits the CENPA-CAD (nucleosome distal) complex and may be involved in incorporation of newly synthesized CENPA into centromeres (By similarity). Part of a nucleosome-associated complex that binds specifically to histone H3-containing nucleosomes at the centromere, as opposed to nucleosomes containing CENPA. Component of the heterotetrameric CENP-T-W-S-X complex that binds and supercoils DNA, and plays an important role in kinetochore assembly. CENPT has a fundamental role in kinetochore assembly and function. It is one of the inner kinetochore proteins, with most further proteins binding downstream. Required for normal chromosome organization and normal progress through mitosis.<ref>PMID:19070575</ref> <ref>PMID:22304917</ref> | |||
<div style="background-color:#fffaf0;"> | <div style="background-color:#fffaf0;"> | ||
== Publication Abstract from PubMed == | == Publication Abstract from PubMed == | ||
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__TOC__ | __TOC__ | ||
</StructureSection> | </StructureSection> | ||
[[Category: | [[Category: Gallus gallus]] | ||
[[Category: Large Structures]] | [[Category: Large Structures]] | ||
[[Category: Cheeseman | [[Category: Cheeseman IM]] | ||
[[Category: Fukagawa | [[Category: Fukagawa T]] | ||
[[Category: Gascoigne | [[Category: Gascoigne KE]] | ||
[[Category: Hori | [[Category: Hori T]] | ||
[[Category: Morikawa | [[Category: Morikawa K]] | ||
[[Category: Nishino | [[Category: Nishino T]] | ||
[[Category: Oyama | [[Category: Oyama T]] | ||
[[Category: Suzuki | [[Category: Suzuki A]] | ||
[[Category: Takeuchi | [[Category: Takeuchi K]] | ||
Revision as of 11:50, 11 October 2023
Crystal structure of the chicken CENP-T histone fold/CENP-W complex, crystal form IICrystal structure of the chicken CENP-T histone fold/CENP-W complex, crystal form II
Structural highlights
FunctionCENPT_CHICK Component of the CENPA-NAC (nucleosome-associated) complex, a complex that plays a central role in assembly of kinetochore proteins, mitotic progression and chromosome segregation (By similarity). The CENPA-NAC complex recruits the CENPA-CAD (nucleosome distal) complex and may be involved in incorporation of newly synthesized CENPA into centromeres (By similarity). Part of a nucleosome-associated complex that binds specifically to histone H3-containing nucleosomes at the centromere, as opposed to nucleosomes containing CENPA. Component of the heterotetrameric CENP-T-W-S-X complex that binds and supercoils DNA, and plays an important role in kinetochore assembly. CENPT has a fundamental role in kinetochore assembly and function. It is one of the inner kinetochore proteins, with most further proteins binding downstream. Required for normal chromosome organization and normal progress through mitosis.[1] [2] Publication Abstract from PubMedThe multiprotein kinetochore complex must assemble at a specific site on each chromosome to achieve accurate chromosome segregation. Defining the nature of the DNA-protein interactions that specify the position of the kinetochore and provide a scaffold for kinetochore formation remain key goals. Here, we demonstrate that the centromeric histone-fold-containing CENP-T-W and CENP-S-X complexes coassemble to form a stable CENP-T-W-S-X heterotetramer. High-resolution structural analysis of the individual complexes and the heterotetramer reveals similarity to other histone fold-containing complexes including canonical histones within a nucleosome. The CENP-T-W-S-X heterotetramer binds to and supercoils DNA. Mutants designed to compromise heterotetramerization or the DNA-protein contacts around the heterotetramer strongly reduce the DNA binding and supercoiling activities in vitro and compromise kinetochore assembly in vivo. These data suggest that the CENP-T-W-S-X complex forms a unique nucleosome-like structure to generate contacts with DNA, extending the "histone code" beyond canonical nucleosome proteins. CENP-T-W-S-X Forms a Unique Centromeric Chromatin Structure with a Histone-like Fold.,Nishino T, Takeuchi K, Gascoigne KE, Suzuki A, Hori T, Oyama T, Morikawa K, Cheeseman IM, Fukagawa T Cell. 2012 Feb 3;148(3):487-501. PMID:22304917[3] From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. See AlsoReferences
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