L-threonyl-[myosin light chain] + phosphate => O-phospho-L-threonyl-[myosin light chain] + H2O
l-threonyl-[myosin light chain] + phosphate => o-phospho-l-threonyl-[myosin light chain] + h2o
L-threonyl-[myosin light chain] + phosphate => O-phospho-L-threonyl-[myosin light chain] + H2O
l-threonyl-[myosin light chain] + phosphate => o-phospho-l-threonyl-[myosin light chain] + h2o