Hysteretic properties of rabbit skeletal muscle phosphorylase kinase: synergistic activation by phosphorylase b, Ca2+, and Mg2+.
To study the hysteretic properties of rabbit skeletal muscle phosphorylase kinase the method of continuous registration of the kinetics of the kinase reaction developed by us earlier has been used. It was shown that duration of the lag period on the kinetic curves is independent of the phosphorylase kinase concentration and the simultaneous presence of phosphorylase b, Ca2+, and Mg2+ is required for the complete transition of the enzyme into the activated state.
Kurganov
B I
BI
A. N. Bach Institute of Biochemistry, Russian Academy of Sciences, Moscow, Russia.
Andreeva
I E
IE
Makeeva
V F
VF
Livanova
N B
NB
D000255:Adenosine Triphosphate / Q000378:metabolism; D000818:Animals; D002118:Calcium / Q000378:metabolism*; D004789:Enzyme Activation; D007700:Kinetics; D008274:Magnesium / Q000378:metabolism*; D018482:Muscle, Skeletal / Q000201:enzymology*; D010764:Phosphorylase Kinase / Q000378:metabolism*; D010763:Phosphorylase b / Q000378:metabolism*; D011817:Rabbits
D000255:Adenosine Triphosphate; D010763:Phosphorylase b; D010764:Phosphorylase Kinase; D008274:Magnesium; D002118:Calcium