Protein
7-methylguanosine phosphate-specific 5'-nucleotidase
Organism
Drosophila melanogaster
Function
Specifically hydrolyzes 7-methylguanosine monophosphate (m(7)GMP) to 7-methylguanosine and inorganic phosphate (PubMed:23223233, PubMed:24603684). Also able to mediate hydrolysis of diphosphate (m(7)GDP) to 7-methylguanosine and 2 inorganic phosphate with lower activity (PubMed:23223233). The specific activity for m(7)GMP may protect cells against undesired salvage of m(7)GMP and its incorporation into nucleic acids (PubMed:23223233). Also has weak activity for CMP (PubMed:23223233, PubMed:24603684). UMP and purine nucleotides are poor substrates (PubMed:23223233, PubMed:24603684).
Similarity
Belongs to the pyrimidine 5'-nucleotidase family.
Sequence
MGFDEKREPTGGRLRLQDIPALTQDHCRMRDPAEVERIINEFVIGGPERMQIVSDFDYTITKQRTEDGGAVPSSFGIFNACQSLPENFKAETDKLYHKYRPIEIDPHMPIAEKVQYMIEWWTKSGELTSGFPFDQSEIDQIASKYTHALRDRTHEFFADLQRLGIPTLVFSAGLGNSVVSVLRQANVLHPNVKVVSNFLQFRDGLLDGFQQPMIHTFNKNETVLNETSEYYDLVHTRDHIIVMGDSIGDADMASGVPASSHIMKIGFLFDHVEANMKKYMDTFDIVLVDDQTMDVPRTLLSLIEKQHKLNLEAPKQSSL