L-threonyl-[myosin heavy-chain] + ATP = O-phospho-L-threonyl-[myosin heavy-chain] + ADP + H(+)
l-threonyl-[myosin heavy-chain] + atp = o-phospho-l-threonyl-[myosin heavy-chain] + adp + h(+)
"myosin heavy chain kinase A"
"myosin heavy chain kinase a"