1plq

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{{STRUCTURE_1plq| PDB=1plq | SCENE= }}
{{STRUCTURE_1plq| PDB=1plq | SCENE= }}
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'''CRYSTAL STRUCTURE OF THE EUKARYOTIC DNA POLYMERASE PROCESSIVITY FACTOR PCNA'''
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===CRYSTAL STRUCTURE OF THE EUKARYOTIC DNA POLYMERASE PROCESSIVITY FACTOR PCNA===
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==Overview==
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The crystal structure of the processivity factor required by eukaryotic DNA polymerase delta, proliferating cell nuclear antigen (PCNA) from S. cerevisiae, has been determined at 2.3 A resolution. Three PCNA molecules, each containing two topologically identical domains, are tightly associated to form a closed ring. The dimensions and electrostatic properties of the ring suggest that PCNA encircles duplex DNA, providing a DNA-bound platform for the attachment of the polymerase. The trimeric PCNA ring is strikingly similar to the dimeric ring formed by the beta subunit (processivity factor) of E. coli DNA polymerase III holoenzyme, with which it shares no significant sequence identity. This structural correspondence further substantiates the mechanistic connection between eukaryotic and prokaryotic DNA replication that has been suggested on biochemical grounds.
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==About this Structure==
==About this Structure==
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[[Category: Kuriyan, J.]]
[[Category: Kuriyan, J.]]
[[Category: Dna-binding]]
[[Category: Dna-binding]]
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Sat May 3 05:13:49 2008''
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Sat Jul 5 16:18:36 2008''

Revision as of 13:18, 5 July 2008

Image:1plq.png

Template:STRUCTURE 1plq

CRYSTAL STRUCTURE OF THE EUKARYOTIC DNA POLYMERASE PROCESSIVITY FACTOR PCNA

Template:ABSTRACT PUBMED 8001157

About this Structure

1PLQ is a Single protein structure of sequence from Saccharomyces cerevisiae. Full crystallographic information is available from OCA.

Reference

Crystal structure of the eukaryotic DNA polymerase processivity factor PCNA., Krishna TS, Kong XP, Gary S, Burgers PM, Kuriyan J, Cell. 1994 Dec 30;79(7):1233-43. PMID:8001157

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