O4'-(phospho-5'-uridine)-L-tyrosine (S)-2-amino-3-[4-(5'-uridine phosphonoxy)phenyl]propanoic acid 306.025299072265625 306.170013427734375 469.088623046875 469.339996337890625 5'-uridylic-O-tyrosine A protein modification that effectively crosslinks an L-tyrosine residue and 5'-phosphouridine through a phosphodiester bond to form O4'-(phospho-5'-uridine)-L-tyrosine. C 18 H 20 N 3 O 10 P 1 C 9 H 11 N 2 O 8 P 1 From DeltaMass: Average Mass: 306. MOD:00261 MOD_RES O-UMP-tyrosine O-Uridinylylation (of Tyrosine) O4'-(phospho-5'-uridine)-L-tyrosine O4'-L-tyrosine 5'-uridine phosphodiester OUMPTyr PSI-MOD PhosphoUridine Unimod:417 Y hydrogen 5'-uridylate tyrosine ester natural uniprot.ptm:PTM-0333 uridine phosphodiester modified L-tyrosine residue uridylated residue