1yd2

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Crystal structure of the GIY-YIG N-terminal endonuclease domain of UvrC from Thermotoga maritima: Point mutant Y19F bound to the catalytic divalent cation

Structural highlights

1yd2 is a 1 chain structure with sequence from Thermotoga maritima. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
Method:X-ray diffraction, Resolution 1.6Å
Ligands:GOL, MN
Resources:FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT

Function

UVRC_THEMA The UvrABC repair system catalyzes the recognition and processing of DNA lesions. UvrC both incises the 5' and 3' sides of the lesion. The N-terminal half is responsible for the 3' incision and the C-terminal half is responsible for the 5' incision (By similarity).

Evolutionary Conservation

Check, as determined by ConSurfDB. You may read the explanation of the method and the full data available from ConSurf.

Publication Abstract from PubMed

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.

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[1]

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

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Citations
10 reviews cite this structure
Nucleases: diversity of structure, function and mechanism.
Yang et al. (2011)
9 more
54 other articles
No citations found

See Also

References

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

Contents


PDB ID 1yd2

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OCA

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