5okc

From Proteopedia

(Difference between revisions)

Revision as of 06:12, 20 December 2017

Crystal structure of the Ctf18-1-8 module from Ctf18-RFC

Structural highlights

5okc is a 6 chain structure. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
Ligands:	,
NonStd Res:
Resources:	FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT

Function

[DCC1_YEAST] Component of the RFC-like complex CTF18-RFC which is required for efficient establishment of chromosome cohesion during S-phase and may load or unload POL30/PCNA. During a clamp loading circle, the RFC:clamp complex binds to DNA and the recognition of the double-stranded/single-stranded junction stimulates ATP hydrolysis by RFC. The complex presumably provides bipartite ATP sites in which one subunit supplies a catalytic site for hydrolysis of ATP bound to the neighboring subunit. Dissociation of RFC from the clamp leaves the clamp encircling DNA.^[1] ^[2] [CTF18_YEAST] Essential for the fidelity of chromosome transmission. Required for the DNA replication block checkpoint. Component of the RFC-like complex CTF18-RFC which is required for efficient establishment of chromosome cohesion during S-phase and may load or unload POL30/PCNA. During a clamp loading circle, the RFC:clamp complex binds to DNA and the recognition of the double-stranded/single-stranded junction stimulates ATP hydrolysis by RFC. The complex presumably provides bipartite ATP sites in which one subunit supplies a catalytic site for hydrolysis of ATP bound to the neighboring subunit. Dissociation of RFC from the clamp leaves the clamp encircling DNA.^[3] ^[4] ^[5] ^[6] [CTF8_YEAST] Essential for the fidelity of chromosome transmission. Required for the DNA replication block checkpoint. Component of the RFC-like complex CTF18-RFC which is required for efficient establishment of chromosome cohesion during S-phase and may load or unload POL30/PCNA. During a clamp loading circle, the RFC:clamp complex binds to DNA and the recognition of the double-stranded/single-stranded junction stimulates ATP hydrolysis by RFC. The complex presumably provides bipartite ATP sites in which one subunit supplies a catalytic site for hydrolysis of ATP bound to the neighboring subunit. Dissociation of RFC from the clamp leaves the clamp encircling DNA.^[7] ^[8]

Publication Abstract from PubMed

Ctf18-RFC is an alternative PCNA loader which plays important but poorly understood roles in multiple DNA replication-associated processes. To fulfill its specialist roles, the Ctf18-RFC clamp loader contains a unique module in which the Dcc1-Ctf8 complex is bound to the C terminus of Ctf18 (the Ctf18-1-8 module). Here, we report the structural and functional characterization of the heterotetrameric complex formed between Ctf18-1-8 and a 63 kDa fragment of DNA polymerase varepsilon. Our data reveal that Ctf18-1-8 binds stably to the polymerase and far from its other functional sites, suggesting that Ctf18-RFC could be associated with Pol varepsilon throughout normal replication as the leading strand clamp loader. We also show that Pol varepsilon and double-stranded DNA compete to bind the same winged-helix domain on Dcc1, with Pol varepsilon being the preferred binding partner, thus suggesting that there are two alternative pathways to recruit Ctf18-RFC to sites of replication.

Structural Basis for the Recruitment of Ctf18-RFC to the Replisome.,Grabarczyk DB, Silkenat S, Kisker C Structure. 2017 Dec 6. pii: S0969-2126(17)30357-X. doi:, 10.1016/j.str.2017.11.004. PMID:29225079^[9]

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

References

↑ Mayer ML, Gygi SP, Aebersold R, Hieter P. Identification of RFC(Ctf18p, Ctf8p, Dcc1p): an alternative RFC complex required for sister chromatid cohesion in S. cerevisiae. Mol Cell. 2001 May;7(5):959-70. PMID:11389843
↑ Bylund GO, Burgers PM. Replication protein A-directed unloading of PCNA by the Ctf18 cohesion establishment complex. Mol Cell Biol. 2005 Jul;25(13):5445-55. PMID:15964801 doi:http://dx.doi.org/25/13/5445
↑ Hanna JS, Kroll ES, Lundblad V, Spencer FA. Saccharomyces cerevisiae CTF18 and CTF4 are required for sister chromatid cohesion. Mol Cell Biol. 2001 May;21(9):3144-58. PMID:11287619 doi:http://dx.doi.org/10.1128/MCB.21.9.3144-3158.2001
↑ Mayer ML, Gygi SP, Aebersold R, Hieter P. Identification of RFC(Ctf18p, Ctf8p, Dcc1p): an alternative RFC complex required for sister chromatid cohesion in S. cerevisiae. Mol Cell. 2001 May;7(5):959-70. PMID:11389843
↑ Naiki T, Kondo T, Nakada D, Matsumoto K, Sugimoto K. Chl12 (Ctf18) forms a novel replication factor C-related complex and functions redundantly with Rad24 in the DNA replication checkpoint pathway. Mol Cell Biol. 2001 Sep;21(17):5838-45. PMID:11486023
↑ Bylund GO, Burgers PM. Replication protein A-directed unloading of PCNA by the Ctf18 cohesion establishment complex. Mol Cell Biol. 2005 Jul;25(13):5445-55. PMID:15964801 doi:http://dx.doi.org/25/13/5445
↑ Mayer ML, Gygi SP, Aebersold R, Hieter P. Identification of RFC(Ctf18p, Ctf8p, Dcc1p): an alternative RFC complex required for sister chromatid cohesion in S. cerevisiae. Mol Cell. 2001 May;7(5):959-70. PMID:11389843
↑ Bylund GO, Burgers PM. Replication protein A-directed unloading of PCNA by the Ctf18 cohesion establishment complex. Mol Cell Biol. 2005 Jul;25(13):5445-55. PMID:15964801 doi:http://dx.doi.org/25/13/5445
↑ Grabarczyk DB, Silkenat S, Kisker C. Structural Basis for the Recruitment of Ctf18-RFC to the Replisome. Structure. 2017 Dec 6. pii: S0969-2126(17)30357-X. doi:, 10.1016/j.str.2017.11.004. PMID:29225079 doi:http://dx.doi.org/10.1016/j.str.2017.11.004

1 Structural highlights
2 Function
3 Publication Abstract from PubMed
4 References

Proteopedia Page Contributors and Editors (what is this?)

OCA

Retrieved from "http://52.214.119.220/wiki/index.php/5okc"

Categories: Grabarczyk, D B | Kisker, C | Clamp loader dna-binding protein triple beta-barrel domain winged-helix domain | Replication

@@ Line 1: / Line 1: @@
-'''Unreleased structure'''
-The entry 5okc is ON HOLD
+==Crystal structure of the Ctf18-1-8 module from Ctf18-RFC==
+<StructureSection load='5okc' size='340' side='right' caption='[[5okc]], [[Resolution|resolution]] 2.30&Aring;' scene=''>
+== Structural highlights ==
+<table><tr><td colspan='2'>[[5okc]] is a 6 chain structure. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=5OKC OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=5OKC FirstGlance]. <br>
+</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=EDO:1,2-ETHANEDIOL'>EDO</scene>, <scene name='pdbligand=NO3:NITRATE+ION'>NO3</scene></td></tr>
+<tr id='NonStdRes'><td class="sblockLbl"><b>[[Non-Standard_Residue|NonStd Res:]]</b></td><td class="sblockDat"><scene name='pdbligand=MSE:SELENOMETHIONINE'>MSE</scene></td></tr>
+<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=5okc FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=5okc OCA], [http://pdbe.org/5okc PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=5okc RCSB], [http://www.ebi.ac.uk/pdbsum/5okc PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=5okc ProSAT]</span></td></tr>
+</table>
+== Function ==
+[[http://www.uniprot.org/uniprot/DCC1_YEAST DCC1_YEAST]] Component of the RFC-like complex CTF18-RFC which is required for efficient establishment of chromosome cohesion during S-phase and may load or unload POL30/PCNA. During a clamp loading circle, the RFC:clamp complex binds to DNA and the recognition of the double-stranded/single-stranded junction stimulates ATP hydrolysis by RFC. The complex presumably provides bipartite ATP sites in which one subunit supplies a catalytic site for hydrolysis of ATP bound to the neighboring subunit. Dissociation of RFC from the clamp leaves the clamp encircling DNA.<ref>PMID:11389843</ref> <ref>PMID:15964801</ref>  [[http://www.uniprot.org/uniprot/CTF18_YEAST CTF18_YEAST]] Essential for the fidelity of chromosome transmission. Required for the DNA replication block checkpoint. Component of the RFC-like complex CTF18-RFC which is required for efficient establishment of chromosome cohesion during S-phase and may load or unload POL30/PCNA. During a clamp loading circle, the RFC:clamp complex binds to DNA and the recognition of the double-stranded/single-stranded junction stimulates ATP hydrolysis by RFC. The complex presumably provides bipartite ATP sites in which one subunit supplies a catalytic site for hydrolysis of ATP bound to the neighboring subunit. Dissociation of RFC from the clamp leaves the clamp encircling DNA.<ref>PMID:11287619</ref> <ref>PMID:11389843</ref> <ref>PMID:11486023</ref> <ref>PMID:15964801</ref>  [[http://www.uniprot.org/uniprot/CTF8_YEAST CTF8_YEAST]] Essential for the fidelity of chromosome transmission. Required for the DNA replication block checkpoint. Component of the RFC-like complex CTF18-RFC which is required for efficient establishment of chromosome cohesion during S-phase and may load or unload POL30/PCNA. During a clamp loading circle, the RFC:clamp complex binds to DNA and the recognition of the double-stranded/single-stranded junction stimulates ATP hydrolysis by RFC. The complex presumably provides bipartite ATP sites in which one subunit supplies a catalytic site for hydrolysis of ATP bound to the neighboring subunit. Dissociation of RFC from the clamp leaves the clamp encircling DNA.<ref>PMID:11389843</ref> <ref>PMID:15964801</ref>
+<div style="background-color:#fffaf0;">
+== Publication Abstract from PubMed ==
+Ctf18-RFC is an alternative PCNA loader which plays important but poorly understood roles in multiple DNA replication-associated processes. To fulfill its specialist roles, the Ctf18-RFC clamp loader contains a unique module in which the Dcc1-Ctf8 complex is bound to the C terminus of Ctf18 (the Ctf18-1-8 module). Here, we report the structural and functional characterization of the heterotetrameric complex formed between Ctf18-1-8 and a 63 kDa fragment of DNA polymerase varepsilon. Our data reveal that Ctf18-1-8 binds stably to the polymerase and far from its other functional sites, suggesting that Ctf18-RFC could be associated with Pol varepsilon throughout normal replication as the leading strand clamp loader. We also show that Pol varepsilon and double-stranded DNA compete to bind the same winged-helix domain on Dcc1, with Pol varepsilon being the preferred binding partner, thus suggesting that there are two alternative pathways to recruit Ctf18-RFC to sites of replication.
-Authors:
+Structural Basis for the Recruitment of Ctf18-RFC to the Replisome.,Grabarczyk DB, Silkenat S, Kisker C Structure. 2017 Dec 6. pii: S0969-2126(17)30357-X. doi:, 10.1016/j.str.2017.11.004. PMID:29225079<ref>PMID:29225079</ref>
-Description:
+From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
-[[Category: Unreleased Structures]]
+</div>
+<div class="pdbe-citations 5okc" style="background-color:#fffaf0;"></div>
+== References ==
+<references/>
+__TOC__
+</StructureSection>
+[[Category: Grabarczyk, D B]]
+[[Category: Kisker, C]]
+[[Category: Clamp loader dna-binding protein triple beta-barrel domain winged-helix domain]]
+[[Category: Replication]]

5okc

From Proteopedia

Revision as of 06:12, 20 December 2017

Crystal structure of the Ctf18-1-8 module from Ctf18-RFC

Structural highlights

Function

Publication Abstract from PubMed

References

Contents

Proteopedia Page Contributors and Editors (what is this?)

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