the recombinant fragment of the myosin heavy chain was purified 2400-fold from one of the resulting cell lines and was found to be functional by the following criteria : the myosin head fragment copurified with the essential and regulatory myosin light chains , decorated actin filaments , and displayed actin-activated adenosine triphosphatase activity .
C0025979
actin filaments
C0001271
actin