Reaction catalyzed by 5-(carboxyamino)imidazole ribonucleotide synthase (6.3.4.18)
ATP
+
+
+
=
ADP
+
+
ATP
+
5-amino-1-(5-phospho-D-ribosyl)imidazole
+
HCO3-
+
H+
=
ADP
+
phosphate
+
5-carboxyamino-1-(5-phospho-D-ribosyl)imidazole
