Properties of histidine decarboxylase from rat gastric mucosa.

  title={Properties of histidine decarboxylase from rat gastric mucosa.},
  author={A Savany and L A Cronenberger},
  journal={European journal of biochemistry},
  volume={123 3},
The properties of specific histidine decarboxylase from highly purified rat gastric mucosa preparations were studied. The kinetic parameters were pH dependent: the apparent Km value varied inversely with pH; the maximum reaction velocity was reached at pH 6.6; the optimum pH was related to substrate concentration. The enzyme was unstable below pH 5.5. The effect of temperature was investigated and the enzyme activity was optimum near 56 degrees C. The thermal inactivation of the enzyme showed… CONTINUE READING