NAD(+)—diphthamide ADP-ribosyltransferase
| NAD+-diphthamide ADP-ribosyltransferase | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| Identifiers | |||||||||
| EC number | 2.4.2.36 | ||||||||
| CAS number | Template:CAS | ||||||||
| Databases | |||||||||
| IntEnz | IntEnz view | ||||||||
| BRENDA | BRENDA entry | ||||||||
| ExPASy | NiceZyme view | ||||||||
| KEGG | KEGG entry | ||||||||
| MetaCyc | metabolic pathway | ||||||||
| PRIAM | profile | ||||||||
| PDB structures | RCSB PDB PDBe PDBsum | ||||||||
| Gene Ontology | AmiGO / EGO | ||||||||
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In enzymology, a NAD+-diphthamide ADP-ribosyltransferase (EC 2.4.2.36) is an enzyme that catalyzes the chemical reaction
- NAD+ + peptide diphthamide
nicotinamide + peptide N-(ADP-D-ribosyl)diphthamide
Thus, the two substrates of this enzyme are NAD+ and peptide diphthamide, whereas its two products are nicotinamide and peptide N-(ADP-D-ribosyl)diphthamide.
This enzyme belongs to the family of glycosyltransferases, to be specific, the pentosyltransferases. The systematic name of this enzyme class is NAD+:peptide-diphthamide N-(ADP-D-ribosyl)transferase. Other names in common use include ADP-ribosyltransferase, mono(ADPribosyl)transferase, and NAD-diphthamide ADP-ribosyltransferase.
Structural studies
As of late 2007, 15 structures have been solved for this class of enzymes, with PDB accession codes 1S5B, 1S5C, 1S5D, 1S5E, 1S5F, 1SGK, 1TOX, 1XDT, 1XK9, 1ZM3, 1ZM4, 1ZM9, 2A5D, 2A5F, and 2A5G.
References
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See also
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