in contrast to previous work ( nishikawa , m. , hidaka , h. , and adelstein , r. s. ( 1983 ) j. biol . chem . 258 , 14069-14072 ) , two-dimensional tryptic peptide maps of both heavy meromyosin and the isolated myosin light chain showed two major phosphopeptides , one containing phosphoserine and the other phosphothreonine .
C0030956
peptide
C0031684
phosphopeptides