2ED103CC696E5D2180D269B52037653BD2A13644170A3BE1697BD94672F3857E8E76F9ACAB5B352AE20354C49A9CC523

Diphthamide is 2-[3-carboxyamido-3-(trimethyl-ammonio)propyl]histidine. Diphthamide can be ADP-ribosylated by diphtheria toxin and by Pseudomonas exotoxin A, thus arresting protein synthesis.

Source:http://purl.uniprot.org/SHA-384/2ED103CC696E5D2180D269B52037653BD2A13644170A3BE1697BD94672F3857E8E76F9ACAB5B352AE20354C49A9CC523