RNA(n) + UTP => RNA(n)-3'-uridine ribonucleotide + diphosphate
rna(n) + utp => rna(n)-3'-uridine ribonucleotide + diphosphate
RNA(n) + UTP => RNA(n)-3'-uridine ribonucleotide + diphosphate
rna(n) + utp => rna(n)-3'-uridine ribonucleotide + diphosphate