Definition of phosphorylase in English:



mass nounBiochemistry
  • An enzyme which introduces a phosphate group into an organic molecule, notably glucose.

    • ‘AKH receptors, located on the surface of fat body cells, trigger increased synthesis of cAMP, which serves to activate phosphorylase b kinase, leading to phosphorylase activation, and the subsequent release of glucose from glycogen.’
    • ‘D-enzyme converts G3 into glucose and larger glucans for further attack by amylases and phosphorylase.’
    • ‘A comparison of starch-degrading enzymes showed a slight decrease of starch phosphorylase, unaltered amylase and moderately increased ß-amylase activities.’
    • ‘The enzyme activated by glucagon is glycogen phosphorylase.’
    • ‘In contrast, when athletes stop training, the activities of their muscles' glycolytic enzymes, such as phosphorylase and phosphofructokinase, change little, if at all, for at least four weeks.’