MYL12B GI:222144328 myosin regulatory light chain MRCL2 isoform B 1 mssmfamfdq sqiqefkeaf nmidqnrdgf idkedlhdml aslgknptda 50 51 yldammneap gpinftmflt mfgeklngtd pedvirnafa cfdeeatgti 100 101 qedylrellt tmgdrftdee vdelyreapi dkkgnfnyie ftrilkhgak 150 151 dkdd