Common substrate for purine and pyrimidine synthesis are all except ?
Ans. is b i.e., Glycine Glutamine, aspaate (aspaic acid) and CO, are preursors for both purines & pyrimidines.In de novo synthesis, purine ring is formed from variety of precursors is assembled on ribose-5-phosphate.
Glutamine
Glycine
Aspaate
Carbon dioxide