derives from O-phospho-L-threonine O-phospho-L-threonine with neutral loss of phosphate -97.976898193359375 -97.98999786376953125 83.03711700439453125 83.089996337890625 C 0 H -3 N 0 O -4 P -1 C 4 H 5 N 1 O 1 Covalent modification of a peptide or protein amino acid phosphorylated threonine with a secondary loss of a neutral trihydrogen phosphate molecular fragment. MOD:00047 MOD:00439 PSI-MOD artifact dPhosOPhosThr modified L-threonine residue phosphorylated residue with neutral loss of phosphate