Kinetic attributes of rat liver microsomal adenosine 5' triphosphate phosphohydrolase (ATPase).

@article{Katewa2003KineticAO,
  title={Kinetic attributes of rat liver microsomal adenosine 5' triphosphate phosphohydrolase (ATPase).},
  author={Subhash D. Katewa and Surendra S. Katyare},
  journal={Indian journal of biochemistry & biophysics},
  year={2003},
  volume={40 4},
  pages={252-9}
}
The kinetic properties of the rat liver microsomal ATPase, with respect to Na(+), K(+) and AT P requirements were examined. Presence of Na(+) and K(+), or both hardly caused any stimulation of the enzyme activity. The Km values for Na(+) and K(+) were substantially low (0.32 and 0.05 mM, respectively), compared to those reported for the Na(+), K(+) ATPasesfrom different tissues. Substrate kinetics studies revealed that in the absence of Na(+) and K(+), ATP is an activator of the enzyme. The… CONTINUE READING

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