作者: PHILLIP H. PEKALA , JOEL MOSS
DOI: 10.1016/B978-0-12-152822-5.50005-1
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摘要: Publisher Summary This chapter discusses poly ADP-ribosylation of protein. is a postsynthetic modification protein that involves the covalent attachment ADP-ribose moiety NAD to specific amino-acid residues or another form poly(ADP-ribose) molecule. There are two classes enzymes responsible for this modification: (1) mono(ADP-ribosyl) transferases and (2) poly(ADP-ribosyl) synthetases. Some bacterial toxins alter activity critical metabolic pathways by catalyzing key regulatory enzyme. Diphtheria toxin Pseudomonas aeruginosa exotoxin A catalyze mono eukaryotic elongation factor II, resulting in inhibition synthesis; choleragen E. coli heat-labile enterotoxin adenylate cyclase, activation Poly(ADP-ribose) synthetase localized primarily nucleus cells.