ADP ribosylation

ADP ri·bo·syl·a·tion

covalent attachment of an ADP-ribosyl moiety to a macromolecule, for example, the action of diphtheria toxin.
References in periodicals archive ?
The entry of CTA1 to the cell cytosol is the key step for intoxication because CTA1 catalyzes the ADP ribosylation of the trimeric Gsa component of AC.
The CTA1-DD fusion protein binds specifically to immunoglobulins on antigen-presenting B cells via the DD protein and induces ADP ribosylation by the CTA1 moiety.
The ADP ribosylation activity of CT resides in CTA1.