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- W1983103640 abstract "Striking effects of F-actin and the reconstituted thin filament of muscle on the catalytic activity of rabbit muscle phosphofructokinase are demonstrated through direct measurements of enzymatic activity by using the pH stat. The addition of F-actin to solutions of phosphofructokinase at low ionic strength (10 mM KCl and 5 mM MgCl2) partially reverses the inhibition of the enzyme seen at high ATP concentrations and increases the apparent affinity of the enzyme for fructose 6-phosphate with slight effect on Vmax. F-Actin augments the activation of the enzyme obtained with AMP and partially counters the inhibition obtained with citrate. The maximum effect in the reversal of ATP inhibition is about the same for combinations of either F-actin or the thin filament with AMP as it is for AMP alone. In general, the effect of F-actin on the catalytic activity of phosphofructokinase is larger than that of the thin filament. The activation of phosphofructokinase by F-actin persists at physiological ionic strength." @default.
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- W1983103640 date "1980-06-10" @default.
- W1983103640 modified "2023-09-25" @default.
- W1983103640 title "Activation of rabbit muscle phosphofructokinase by F-actin and reconstituted thin filaments" @default.
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- W1983103640 doi "https://doi.org/10.1021/bi00553a022" @default.
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