title: Effects of tryptic digestion on the enzymatic activites of chicken gizzard myosin.
abstract: Tryptic digestion of gizzard myosin resulted in the degradation of the 20K light chain (G1) to its 17K fragment, which could not be phosphorylated. The rapid loss of Ca2+-dependent activation of actomyosin ATPase activity accompanied the degradation of G1. Increase in the Ca2+-ATPase activity and decrease in the EDTA-ATPase activity of myosin accompanied the degradation of myosin heavy chain, but not the cleavage of G1.
mesh_terms: D000199:Actins / Q000494:pharmacology; D000251:Adenosine Triphosphatases / Q000378:metabolism*; D000818:Animals; D002118:Calcium / Q000378:metabolism; D002645:Chickens; D004492:Edetic Acid / Q000494:pharmacology; D004789:Enzyme Activation; D005895:Gizzard, Avian / Q000201:enzymology*; D009218:Myosins / Q000378:metabolism* / Q000494:pharmacology; D010446:Peptide Fragments / Q000378:metabolism; D010710:Phosphates / Q000378:metabolism; D014357:Trypsin / Q000378:metabolism*
chemical_list: D000199:Actins; D010446:Peptide Fragments; D010710:Phosphates; D004492:Edetic Acid; D014357:Trypsin; D000251:Adenosine Triphosphatases; D009218:Myosins; D002118:Calcium