GO:0004164

diphthine synthase activity

Details: 
Catalysis of the reaction: S-adenosyl-L-methionine + 2-(3-carboxy-3-aminopropyl)-L-histidine = S-adenosyl-L-homocysteine + 2-(3-carboxy-3-(methylammonio)propyl)-L-histidine. [EC:2.1.1.98]
Evidence Code: