to clarify the characteristics of myosin isozymes in the atrium , we fractionated two isoforms of myosin heavy chain ( hc ) , atrial hc alpha ( a-hc alpha ) and hc beta ( a-hc beta ) , from the canine heart by affinity chromatography , using monoclonal antibodies specific for hc alpha ( cma19 ) and hc beta ( hmc50 ) , respectively , and then compared their peptide composition and enzymatic properties with those of ventricular hc alpha ( v-hc alpha ) and hc beta ( v-hc beta ) .
C0027096
myosin
C0027100
myosin heavy chain