34093 COG1691Thalassiosira pseudonana
GO:0004638 GO:0006189 GO:0009320 -
phosphoribosylaminoimidazole carboxylase activity
Catalysis of the reaction: 5-amino-1-(5-phospho-D-ribosyl)imidazole-4-carboxylate + 2 H(+) = 5-amino-1-(5-phospho-D-ribosyl)imidazole + CO(2).
'de novo' IMP biosynthetic process
The chemical reactions and pathways resulting in the formation of IMP, inosine monophosphate, by the stepwise assembly of a purine ring on ribose 5-phosphate.
phosphoribosylaminoimidazole carboxylase complex
A protein complex that possesses phosphoribosylaminoimidazole carboxylase activity.