label: 4-amino-5-hydroxymethyl-2-methylpyrimidine phosphate synthase activity
label_lc: 4-amino-5-hydroxymethyl-2-methylpyrimidine phosphate synthase activity
description: "Catalysis of the reaction: 5-aminoimidazole ribonucleotide + S-adenosylmethionine = 4-amino-5-hydroxymethyl-2-methylpyrimidine phosphate + 5'deoxyadenosine."