RT Journal Article T1 ADP-ribosyltransferases: plastic tools for inactivating protein and small molecular weight targets A1 Koch-Nolte, Friedrich A1 Reche, Pedro A A1 Haag, Friedrich A1 Bazan, Fernando AB ADP-ribosyltransferases (ADPRTs) form an interesting class of enzymes with well-established roles as potent bacterial toxins and metabolic regulators. ADPRTs catalyze the transfer of the ADP-ribose moiety from NAD(+) onto specific substrates including proteins. ADP-ribosylation usually inactivates the function of the target. ADPRTs have become adapted to function in extra- and intracellular settings. Regulation of ADPRT activity can be mediated by ligand binding to associated regulatory domains, proteolytic cleavage, disulphide bond reduction, and association with other proteins. Crystallisation has revealed a conserved core set of elements that define an unusual minimal scaffold of the catalytic domain with remarkably plastic sequence requirements--only a single glutamic acid residue critical to catalytic activity is invariant. These inherent properties of ADPRTs suggest that the ADPRT catalytic fold is an attractive, malleable subject for protein design. PB Elsevier SN 1873-4863 YR 2001 FD 2001 LK https://hdl.handle.net/20.500.14352/58250 UL https://hdl.handle.net/20.500.14352/58250 LA eng DS Docta Complutense RD 30 abr 2024