MYL1 GI:17986275 fast skeletal myosin alkali light chain 1 isoform 3f 1 msfsadqiae fkeafllfdr tgdskitlsq vgdvlralgt nptnaevrkv 50 51 lgnpsneeln akkiefeqfl pmmqaisnnk dqatyedfve glrvfdkegn 100 101 gtvmgaelrh vlatlgekmk eeevealmag qedsngciny eafvkhimsi 150