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Polyuridylic acid potassium salt, a homopolymer of uridine, is used as a single-stranded RNA model compound often in comparison with other ssRNA model oligonucleotides such as Poly(I) and Poly(C) to study processes that are dependent upon ssRNA regulation such as Toll-like receptor regulation.

ChEBI: Uridine 5'-monophosphate is a pyrimidine ribonucleoside 5'-monophosphate having uracil as the nucleobase. It has a role as a human metabolite, an Escherichia coli metabolite and a mouse metabolite. It is a uridine 5'-phosphate and a pyrimidine ribonucleoside 5'-monophosphate. It is a conjugate acid of a uridine 5'-monophosphate(2-).