Protein
Bifunctional phosphopantetheine adenylyltransferase/NTP phosphatase
Organism
Thermoplasma acidophilum (strain ATCC 25905 / DSM 1728 / JCM 9062 / NBRC 15155 / AMRC-C165)
Function
Phosphatase that hydrolyzes non-canonical purine nucleotides such as XTP and ITP to their respective diphosphate derivatives. Probably excludes non-canonical purines from DNA/RNA precursor pool, thus preventing their incorporation into DNA/RNA and avoiding chromosomal lesions.
Similarity
In the C-terminal section; belongs to the YjjX NTPase family.
Sequence
MITVVGGTFSKLHKGHKALLNTAIDTGNEVVIGLTSDEYVKKNKVYPAIPYSVRYRTLYNYMIKRTNKFRIRQIDDRNGNAPYEKDYEVIVVSPETYPRSLKINEIRISNGLPPLKIIRVPYVLAQDLFPISSTRIINGEIDTNGKRITPLKVGISTRNEAKIQAVEKFVRRLVKNYQIVKNENYNLKTQQPFGEETMELATQRAMEALKDNDYSVGIESGIIYESFSKKYYDVHYCVVIDRFGNVTRGMSSGFEIPDHIVDRMKRDRTFSEAYSGYLNVQEIDQSEGIIGKISEGKLRRIDLIEESIRNAFILRLDPDFYDSTYTPP