Nitrogen atoms in purines are derived from all except-
Nitrogen atoms in purines are derived from amino acids - Aspaate Glutamine Glycine Nitrogen atoms in purines Carbon atoms in purines N1 from Aspaate C2 from N10Formyl Tetrahydrofolate N3 & N9 from Glutamine C4 and C5 from Glycine N7 from Glycine C6 from CO2 C8 from N5,N10Methenyl THF
Aspaate
Glutamine
Glutamate
Glycine
Nucleotides