Any feedback?
Please rate this page
(ecexplorer.php)
(0/150)

BRENDA support

EC Explorer

EC 2.4.2.36 Details
EC number
2.4.2.36
Accepted name
NAD+—diphthamide ADP-ribosyltransferase
Reaction
NAD+ + diphthamide-[translation elongation factor 2] = nicotinamide + N-(ADP-D-ribosyl)diphthamide-[translation elongation factor 2]
Other name(s)
ADP-ribosyltransferase, mono(ADPribosyl)transferase, NAD—diphthamide ADP-ribosyltransferase, NAD+:peptide-diphthamide N-(ADP-D-ribosyl)transferase
Systematic name
NAD+:diphthamide-[translation elongation factor 2] N-(ADP-D-ribosyl)transferase
CAS registry number
52933-21-8
Comment
Diphtheria toxin and some other bacterial toxins catalyse this reaction, which inactivates translation elongation factor 2 (EF2). The acceptor is diphthamide, a unique modification of a histidine residue in the elongation factor found in archaebacteria and all eukaryotes, but not in eubacteria. cf. EC 2.4.2.31 NAD(P)+—protein-arginine ADP-ribosyltransferase. The relevant histidine of EF2 is His715 in mammals, His699 in yeast and His600 in Pyrococcus horikoshii.
History
created 1990, modified 2013
EC Tree
2.5.1.12 created 1972, deleted 1976
2.5.1.13 created 1972, deleted 1976
2.5.1.14 created 1972, deleted 1976
2.5.1.37 created 1989, deleted 2004
2.5.1.40 created 1992, deleted 1999