Description
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).
Biophysicochemical Properties
13 uM for m(7)GMP (at 25 degrees Celsius)
12 uM for m(7)GMP (at 25 degrees Celsius)
48 uM for CMP (at 25 degrees Celsius)
102 uM for GMP (at 25 degrees Celsius)
32 uM for AMP (at 25 degrees Celsius)
91 uM for UMP (at 25 degrees Celsius)