Abstract
Rat and rabbit muscle fructose 1,6-bisphosphatase ( d-fructose-1,6-bisphosphate 1-phosphohydrolase, EC 3.1.3.11) are inhibited by fructose 2,6-bisphosphate. In contrast with the liver isozyme, the inhibition of muscle fructose-1,6-bisphosphatase by fructose 2,6-bisphosphate is not synergistic with that of AMP, Activation of fructose-1,6-bisphosphatase by fructose 2,6-bisphosphate has been observed at high concentrations of substrate. An attempt is made to correlate changes in concentrations of hexose monophosphate, fructose 1,6-bisphosphate and fructose 2,6-bisphosphate with changes in fluxes through 6-phosphofructokinase and fructose-1,6-bisphosphatase in isolated epitrochlearis muscle challenged with insulin and adrenaline.
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More From: Biochimica et Biophysica Acta (BBA)/Protein Structure and Molecular Enzymology
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