Enzymatic reactions [BR:br08201]
2. Transferase reactions
2.5 Transferring alkyl or aryl groups, other than methyl groups
2.5.1 Transferring alkyl or aryl groups, other than methyl groups (only sub-subclass identified to date)
2.5.1.152
R12341 S-Adenosyl-L-methionine + D-Histidine <=> (2S)-2-Amino-4-{[(1R)-1-carboxy-2-(1H-imidazol-4-yl)ethyl]amino}butanoate + 5'-Methylthioadenosine