2nrr: Difference between revisions

Revision as of 15:31, 29 July 2008

This article has been automatically seeded. Changes to this page should pertain to the PDB entry only and not to the protein or biomolecule in general.

File:2nrr.png

Template:STRUCTURE 2nrr

Crystal structure of the C-terminal RNAseH endonuclase domain of UvrCCrystal structure of the C-terminal RNAseH endonuclase domain of UvrC

Template:ABSTRACT PUBMED 17245438

About this StructureAbout this Structure

2NRR is a Single protein structure of sequence from Thermotoga maritima. Full crystallographic information is available from OCA.

ReferenceReference

Structure of the C-terminal half of UvrC reveals an RNase H endonuclease domain with an Argonaute-like catalytic triad., Karakas E, Truglio JJ, Croteau D, Rhau B, Wang L, Van Houten B, Kisker C, EMBO J. 2007 Jan 24;26(2):613-22. PMID:17245438

Page seeded by OCA on Tue Jul 29 15:31:31 2008

Proteopedia Page Contributors and Editors (what is this?)Proteopedia Page Contributors and Editors (what is this?)

OCA

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-'''Crystal structure of the C-terminal RNAseH endonuclase domain of UvrC'''
+===Crystal structure of the C-terminal RNAseH endonuclase domain of UvrC===
-==Overview==
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-Removal and repair of DNA damage by the nucleotide excision repair pathway requires two sequential incision reactions, which are achieved by the endonuclease UvrC in eubacteria. Here, we describe the crystal structure of the C-terminal half of UvrC, which contains the catalytic domain responsible for 5' incision and a helix-hairpin-helix-domain that is implicated in DNA binding. Surprisingly, the 5' catalytic domain shares structural homology with RNase H despite the lack of sequence homology and contains an uncommon DDH triad. The structure also reveals two highly conserved patches on the surface of the protein, which are not related to the active site. Mutations of residues in one of these patches led to the inability of the enzyme to bind DNA and severely compromised both incision reactions. Based on our results, we suggest a model of how UvrC forms a productive protein-DNA complex to excise the damage from DNA.
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