. Author manuscript; available in PMC: 2009 Nov 1.

Published in final edited form as: Cell Mol Life Sci. 2008 Nov;65(23):3699–3724. doi: 10.1007/s00018-008-8295-8

Table 1.

Intermediates of purine biosynthesis

intermediate abbreviation	product of step N	intermediate name
PRPP	-	5-phosphoribosylpyrophosphate
PRA	1	5-phospho-D-ribosylamine
GAR	2	glycinamide ribonucleotide
FGAR	3, 3a	N-formylglycinamide ribonucleotide
FGAM	4, 4a	N-formylglycinamidine ribonucleotide
AIR	5	aminoimidazole ribonucleotide
NCAIR	6a	N⁵-carboxyaminoimidazole ribonucleotide
CAIR	6, 6b	carboxyaminoimidazole ribonucleotide
SAICAR	7	N-succinocarboxamide-5-aminoimidazole ribonucleotide
AICAR	8	aminoimidazole-4-carboxamide ribonucleotide
FAICAR	9, 9a	5-formamido-4-imidazolecarboxamide ribonucleotide
IMP	10, 10a	inosine monophosphate