Specific activity is > 15 unit/mg, and is defined as the amount of enzyme that catalyze the formation of 1 umole of guanosine 5-monophosphate(GMP) per minute from guanine and phosphoribosyl pyrophosphate at pH 7.5 at 37°C.
Quality Control Testing:
3 ug by SDS-PAGE under reducing condition and visualized by Coomassie blue stain.
Storage Buffer:
In 20mM Tris-HCl pH 8.0 (20% glycerol)
Storage Instruction:
Store at 2°C to 8°C for 1 week. For long term storage, aliquot and store at -20°C to -80°C. Aliquot to avoid repeated freezing and thawing.
The protein encoded by this gene is a transferase, which catalyzes conversion of hypoxanthine to inosine monophosphate and guanine to guanosine monophosphate via transfer of the 5-phosphoribosyl group from 5-phosphoribosyl 1-pyrophosphate. This enzyme plays a central role in the generation of purine nucleotides through the purine salvage pathway. Mutations in this gene result in Lesch-Nyhan syndrome or gout