Noun
ribosylation (plural ribosylations)
(biochemistry) The attachment of a ribose or ribosyl group to a molecule, especially to a polypeptide or protein
A coatomer coat assembles and disassembles due to an ADP ribosylation factor (ARF) protein. Source: Internet
PRPP transferase catalyzes both the ribosylation and decarboxylation reactions, forming UMP from orotic acid in the presence of PRPP. Source: Internet