Reaction catalyzed by diphthine synthase (2.1.1.98)
+
=
+
diphthine-[translation elongation factor 2]
S-adenosyl-L-methionine
+
2-[(3S)-3-carboxy-3-(dimethylamino)propyl]-L-histidine-[translation elongation factor 2]
=
S-adenosyl-L-homocysteine
+
diphthine-[translation elongation factor 2]