2e5x

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Structure of nucleotide triphosphate pyrophosphatase from pyrococcus horikoshii OT3Structure of nucleotide triphosphate pyrophosphatase from pyrococcus horikoshii OT3

Structural highlights

2e5x is a 1 chain structure with sequence from Pyrococcus horikoshii OT3. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
Method:X-ray diffraction, Resolution 2Å
Ligands:, ,
Resources:FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT, TOPSAN

Function

IXTPA_PYRHO Pyrophosphatase that catalyzes the hydrolysis of nucleoside triphosphates to their monophosphate derivatives, with a high preference for the non-canonical purine nucleotides XTP (xanthosine triphosphate), dITP (deoxyinosine triphosphate) and ITP. Seems to function as a house-cleaning enzyme that removes non-canonical purine nucleotides from the nucleotide pool, thus preventing their incorporation into DNA/RNA and avoiding chromosomal lesions.[HAMAP-Rule:MF_01405][1]

Evolutionary Conservation

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

References

  1. Lokanath NK, Pampa KJ, Takio K, Kunishima N. Structures of dimeric nonstandard nucleotide triphosphate pyrophosphatase from Pyrococcus horikoshii OT3: functional significance of interprotomer conformational changes. J Mol Biol. 2008 Jan 25;375(4):1013-25. Epub 2007 Nov 13. PMID:18062990 doi:10.1016/j.jmb.2007.11.018

2e5x, resolution 2.00Å

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OCA