Uridylyl

Uridine monophosphate (UMP), also known as 5′-uridylic acid (conjugate baseuridylate), is a nucleotide that is used as a monomer in RNA. It is an ester of phosphoric acid with the nucleosideuridine. UMP consists of the phosphategroup, the pentosesugarribose, and the nucleobaseuracil; hence, it is a ribonucleotide monophosphate. As a substituent or radical its name takes the form of the prefix uridylyl-. The deoxy form is abbreviated dUMP. Covalent attachment of UMP (e.g., to a protein such as adenylyltransferase) is called uridylylation (or sometimes uridylation).