5lpg

Structural highlights

Function

[NUD15_HUMAN] Mediates the hydrolysis of some nucleoside diphosphate derivatives. Can degrade 8-oxo-dGTP in vitro, suggesting that it may remove an oxidatively damaged form of guanine (7,8-dihydro-8-oxoguanine) from DNA and the nucleotide pool, thereby preventing misincorporation of 8-oxo-dGTP into DNA thus preventing A:T to C:G transversions. Its substrate specificity in vivo however remains unclear (By similarity). May have a role in DNA synthesis and cell cycle progression through the interaction with PCNA.^{[1] [2]}

References

1. ↑ Yu Y, Cai JP, Tu B, Wu L, Zhao Y, Liu X, Li L, McNutt MA, Feng J, He Q, Yang Y, Wang H, Sekiguchi M, Zhu WG. Proliferating cell nuclear antigen is protected from degradation by forming a complex with MutT Homolog2. J Biol Chem. 2009 Jul 17;284(29):19310-20. doi: 10.1074/jbc.M109.015289. Epub, 2009 May 6. PMID:19419956 doi:http://dx.doi.org/10.1074/jbc.M109.015289
2. ↑ Takagi Y, Setoyama D, Ito R, Kamiya H, Yamagata Y, Sekiguchi M. Human MTH3 (NUDT18) protein hydrolyzes oxidized forms of guanosine and deoxyguanosine diphosphates: comparison with MTH1 and MTH2. J Biol Chem. 2012 Jun 15;287(25):21541-9. doi: 10.1074/jbc.M112.363010. Epub 2012, May 3. PMID:22556419 doi:10.1074/jbc.M112.363010