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1sxj

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{{STRUCTURE_1sxj| PDB=1sxj | SCENE= }}
{{STRUCTURE_1sxj| PDB=1sxj | SCENE= }}
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'''Crystal Structure of the Eukaryotic Clamp Loader (Replication Factor C, RFC) Bound to the DNA Sliding Clamp (Proliferating Cell Nuclear Antigen, PCNA)'''
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===Crystal Structure of the Eukaryotic Clamp Loader (Replication Factor C, RFC) Bound to the DNA Sliding Clamp (Proliferating Cell Nuclear Antigen, PCNA)===
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==Overview==
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Sliding clamps are ring-shaped proteins that encircle DNA and confer high processivity on DNA polymerases. Here we report the crystal structure of the five-protein clamp loader complex (replication factor-C, RFC) of the yeast Saccharomyces cerevisiae, bound to the sliding clamp (proliferating cell nuclear antigen, PCNA). Tight interfacial coordination of the ATP analogue ATP-gammaS by RFC results in a spiral arrangement of the ATPase domains of the clamp loader above the PCNA ring. Placement of a model for primed DNA within the central hole of PCNA reveals a striking correspondence between the RFC spiral and the grooves of the DNA double helix. This model, in which the clamp loader complex locks onto primed DNA in a screw-cap-like arrangement, provides a simple explanation for the process by which the engagement of primer-template junctions by the RFC:PCNA complex results in ATP hydrolysis and release of the sliding clamp on DNA.
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{{ABSTRACT_PUBMED_15201901}}
==About this Structure==
==About this Structure==
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[[Category: Dna-binding protein]]
[[Category: Dna-binding protein]]
[[Category: Processivity clamp]]
[[Category: Processivity clamp]]
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Sat May 3 09:15:05 2008''
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Tue Jul 29 03:29:53 2008''

Revision as of 00:29, 29 July 2008

Image:1sxj.png

Template:STRUCTURE 1sxj

Crystal Structure of the Eukaryotic Clamp Loader (Replication Factor C, RFC) Bound to the DNA Sliding Clamp (Proliferating Cell Nuclear Antigen, PCNA)

Template:ABSTRACT PUBMED 15201901

About this Structure

1SXJ is a Protein complex structure of sequences from Saccharomyces cerevisiae. Full crystallographic information is available from OCA.

Reference

Structural analysis of a eukaryotic sliding DNA clamp-clamp loader complex., Bowman GD, O'Donnell M, Kuriyan J, Nature. 2004 Jun 17;429(6993):724-30. PMID:15201901

Page seeded by OCA on Tue Jul 29 03:29:53 2008

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