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[[Image:2cu9.gif|left|200px]]


{{Structure
==Crystal structure of Histone chaperone cia1==
|PDB= 2cu9 |SIZE=350|CAPTION= <scene name='initialview01'>2cu9</scene>, resolution 1.80&Aring;
<StructureSection load='2cu9' size='340' side='right'caption='[[2cu9]], [[Resolution|resolution]] 1.80&Aring;' scene=''>
|SITE= <scene name='pdbsite=AC1:Pg0+Binding+Site+For+Residue+A+1203'>AC1</scene>
== Structural highlights ==
|LIGAND= <scene name='pdbligand=PG0:2-(2-METHOXYETHOXY)ETHANOL'>PG0</scene>
<table><tr><td colspan='2'>[[2cu9]] is a 1 chain structure with sequence from [https://en.wikipedia.org/wiki/Schizosaccharomyces_pombe Schizosaccharomyces pombe]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2CU9 OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=2CU9 FirstGlance]. <br>
|ACTIVITY=  
</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 1.8&#8491;</td></tr>
|GENE=  
<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=PG0:2-(2-METHOXYETHOXY)ETHANOL'>PG0</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=2cu9 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2cu9 OCA], [https://pdbe.org/2cu9 PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=2cu9 RCSB], [https://www.ebi.ac.uk/pdbsum/2cu9 PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=2cu9 ProSAT], [https://www.topsan.org/Proteins/RSGI/2cu9 TOPSAN]</span></td></tr>
</table>
== Function ==
[https://www.uniprot.org/uniprot/ASF1_SCHPO ASF1_SCHPO] Histone chaperone that facilitates histone deposition and histone exchange and removal during nucleosome assembly and disassembly.<ref>PMID:11856374</ref>
== Evolutionary Conservation ==
[[Image:Consurf_key_small.gif|200px|right]]
Check<jmol>
  <jmolCheckbox>
    <scriptWhenChecked>; select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/cu/2cu9_consurf.spt"</scriptWhenChecked>
    <scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview01.spt</scriptWhenUnchecked>
    <text>to colour the structure by Evolutionary Conservation</text>
  </jmolCheckbox>
</jmol>, as determined by [http://consurfdb.tau.ac.il/ ConSurfDB]. You may read the [[Conservation%2C_Evolutionary|explanation]] of the method and the full data available from [http://bental.tau.ac.il/new_ConSurfDB/main_output.php?pdb_ID=2cu9 ConSurf].
<div style="clear:both"></div>
<div style="background-color:#fffaf0;">
== Publication Abstract from PubMed ==
The assembly of core histones onto eukaryotic DNA is modulated by several histone chaperone complexes, including Asf1, CAF-1, and HIRA. Asf1 is a unique histone chaperone that participates in both the replication-dependent and replication-independent pathways. Here we report the crystal structures of the apo-form of fission yeast Asf1/Cia1 (SpAsf1N; residues 1-161) as well as its complexes with the B-domain of the fission yeast HIRA orthologue Hip1 (Hip1B) and the C-terminal region of the Cac2 subunit of CAF-1 (Cac2C). The mode of the fission yeast Asf1N-Hip1B recognition is similar to that of the human Asf1-HIRA recognition, suggesting that Asf1N recognition of Hip1B/HIRA is conserved from yeast to mammals. Interestingly, Hip1B and Cac2C show remarkably similar interaction modes with Asf1. The binding between Asf1N and Hip1B was almost completely abolished by the D37A and L60A/V62A mutations in Asf1N, indicating the critical role of salt bridge and van der Waals contacts in the complex formation. Consistently, both of the aforementioned Asf1 mutations also drastically reduced the binding to Cac2C. These results provide a structural basis for a mutually exclusive Asf1-binding model of CAF-1 and HIRA/Hip1, in which Asf1 and CAF-1 assemble histones H3/H4 (H3.1/H4 in vertebrates) in a replication-dependent pathway, whereas Asf1 and HIRA/Hip1 assemble histones H3/H4 (H3.3/H4 in vertebrates) in a replication-independent pathway.


'''Crystal structure of Histone chaperone cia1'''
Crystal structures of fission yeast histone chaperone Asf1 complexed with the Hip1 B-domain or the Cac2 C terminus.,Malay AD, Umehara T, Matsubara-Malay K, Padmanabhan B, Yokoyama S J Biol Chem. 2008 May 16;283(20):14022-31. Epub 2008 Mar 11. PMID:18334479<ref>PMID:18334479</ref>


From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
</div>
<div class="pdbe-citations 2cu9" style="background-color:#fffaf0;"></div>


==About this Structure==
==See Also==
2CU9 is a [[Single protein]] structure of sequence from [http://en.wikipedia.org/wiki/Schizosaccharomyces_pombe Schizosaccharomyces pombe]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2CU9 OCA].
*[[Anti-silencing factor 3D structures|Anti-silencing factor 3D structures]]
== References ==
<references/>
__TOC__
</StructureSection>
[[Category: Large Structures]]
[[Category: Schizosaccharomyces pombe]]
[[Category: Schizosaccharomyces pombe]]
[[Category: Single protein]]
[[Category: Padmanabhan B]]
[[Category: Padmanabhan, B.]]
[[Category: Yokoyama S]]
[[Category: RSGI, RIKEN Structural Genomics/Proteomics Initiative.]]
[[Category: Yokoyama, S.]]
[[Category: PG0]]
[[Category: chaperone]]
[[Category: immunoglobulin fold]]
[[Category: national project on protein structural and functional analyse]]
[[Category: nppsfa]]
[[Category: riken structural genomics/proteomics initiative]]
[[Category: rsgi]]
[[Category: structural genomic]]
 
''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Thu Mar 20 16:19:53 2008''

Latest revision as of 11:20, 25 October 2023

Crystal structure of Histone chaperone cia1Crystal structure of Histone chaperone cia1

Structural highlights

2cu9 is a 1 chain structure with sequence from Schizosaccharomyces pombe. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
Method:X-ray diffraction, Resolution 1.8Å
Ligands:
Resources:FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT, TOPSAN

Function

ASF1_SCHPO Histone chaperone that facilitates histone deposition and histone exchange and removal during nucleosome assembly and disassembly.[1]

Evolutionary Conservation

Check, as determined by ConSurfDB. You may read the explanation of the method and the full data available from ConSurf.

Publication Abstract from PubMed

The assembly of core histones onto eukaryotic DNA is modulated by several histone chaperone complexes, including Asf1, CAF-1, and HIRA. Asf1 is a unique histone chaperone that participates in both the replication-dependent and replication-independent pathways. Here we report the crystal structures of the apo-form of fission yeast Asf1/Cia1 (SpAsf1N; residues 1-161) as well as its complexes with the B-domain of the fission yeast HIRA orthologue Hip1 (Hip1B) and the C-terminal region of the Cac2 subunit of CAF-1 (Cac2C). The mode of the fission yeast Asf1N-Hip1B recognition is similar to that of the human Asf1-HIRA recognition, suggesting that Asf1N recognition of Hip1B/HIRA is conserved from yeast to mammals. Interestingly, Hip1B and Cac2C show remarkably similar interaction modes with Asf1. The binding between Asf1N and Hip1B was almost completely abolished by the D37A and L60A/V62A mutations in Asf1N, indicating the critical role of salt bridge and van der Waals contacts in the complex formation. Consistently, both of the aforementioned Asf1 mutations also drastically reduced the binding to Cac2C. These results provide a structural basis for a mutually exclusive Asf1-binding model of CAF-1 and HIRA/Hip1, in which Asf1 and CAF-1 assemble histones H3/H4 (H3.1/H4 in vertebrates) in a replication-dependent pathway, whereas Asf1 and HIRA/Hip1 assemble histones H3/H4 (H3.3/H4 in vertebrates) in a replication-independent pathway.

Crystal structures of fission yeast histone chaperone Asf1 complexed with the Hip1 B-domain or the Cac2 C terminus.,Malay AD, Umehara T, Matsubara-Malay K, Padmanabhan B, Yokoyama S J Biol Chem. 2008 May 16;283(20):14022-31. Epub 2008 Mar 11. PMID:18334479[2]

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

See Also

References

  1. ↑ Umehara T, Chimura T, Ichikawa N, Horikoshi M. Polyanionic stretch-deleted histone chaperone cia1/Asf1p is functional both in vivo and in vitro. Genes Cells. 2002 Jan;7(1):59-73. PMID:11856374
  2. ↑ Malay AD, Umehara T, Matsubara-Malay K, Padmanabhan B, Yokoyama S. Crystal structures of fission yeast histone chaperone Asf1 complexed with the Hip1 B-domain or the Cac2 C terminus. J Biol Chem. 2008 May 16;283(20):14022-31. Epub 2008 Mar 11. PMID:18334479 doi:10.1074/jbc.M800594200

2cu9, resolution 1.80Å

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