1yd3: Difference between revisions

Revision as of 21:36, 28 July 2008

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File:1yd3.png

Template:STRUCTURE 1yd3

Crystal structure of the GIY-YIG N-terminal endonuclease domain of UvrC from Thermotoga maritima: Point mutant Y43F bound to its catalytic divalent cationCrystal structure of the GIY-YIG N-terminal endonuclease domain of UvrC from Thermotoga maritima: Point mutant Y43F bound to its catalytic divalent cation

Template:ABSTRACT PUBMED 15692561

About this StructureAbout this Structure

1YD3 is a Single protein structure of sequence from Thermotoga maritima. Full crystallographic information is available from OCA.

ReferenceReference

Structural insights into the first incision reaction during nucleotide excision repair., Truglio JJ, Rhau B, Croteau DL, Wang L, Skorvaga M, Karakas E, DellaVecchia MJ, Wang H, Van Houten B, Kisker C, EMBO J. 2005 Mar 9;24(5):885-94. Epub 2005 Feb 3. PMID:15692561

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OCA

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-'''Crystal structure of the GIY-YIG N-terminal endonuclease domain of UvrC from Thermotoga maritima: Point mutant Y43F bound to its catalytic divalent cation'''
+===Crystal structure of the GIY-YIG N-terminal endonuclease domain of UvrC from Thermotoga maritima: Point mutant Y43F bound to its catalytic divalent cation===
-==Overview==
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-Nucleotide excision repair is a highly conserved DNA repair mechanism present in all kingdoms of life. The incision reaction is a critical step for damage removal and is accomplished by the UvrC protein in eubacteria. No structural information is so far available for the 3' incision reaction. Here we report the crystal structure of the N-terminal catalytic domain of UvrC at 1.5 A resolution, which catalyzes the 3' incision reaction and shares homology with the catalytic domain of the GIY-YIG family of intron-encoded homing endonucleases. The structure reveals a patch of highly conserved residues surrounding a catalytic magnesium-water cluster, suggesting that the metal binding site is an essential feature of UvrC and all GIY-YIG endonuclease domains. Structural and biochemical data strongly suggest that the N-terminal endonuclease domain of UvrC utilizes a novel one-metal mechanism to cleave the phosphodiester bond.
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 [[Category: Dna binding protein]]
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