Determination and location of phosphoserine in proteins and peptides by conversion to S-ethylcysteine.

Amino Acid Sequence Animals Chromatography, High Pressure Liquid/methods Cysteine/analogs & derivatives Hydrolysis Indicators and Reagents Macromolecular Substances Molecular Sequence Data Myocardium/metabolism Oligopeptides/chemical synthesis,chemistry,isolation & purification Phosphopeptides/chemistry,isolation & purification Phosphoproteins/chemistry,isolation & purification Phosphorylase Kinase/chemistry,isolation & purification Phosphoserine/analysis Phosphothreonine/analysis Troponin/chemistry Troponin I

Indicators and Reagents Macromolecular Substances Oligopeptides Phosphopeptides Phosphoproteins Troponin Troponin I Phosphothreonine Phosphoserine S-ethylcysteine Phosphorylase Kinase Cysteine