Sep 14, 1976

HCO-3-activated adenosine triphosphatase in intestinal mucosa of the eel

Biochimica Et Biophysica Acta
M Morisawa, S Utida

Abstract

An HCO-3-activated and SCN--inhibited ATPase (ATP phosphohydrolase, EC 3.6.1.3) found in homogenates of intestinal mucosa of the eel was solubilized by Triton X-100. Optimal HCO-3-concentration and pH for the enzyme were 25 mM and 8.7, respectively. HCO-3-ATPase activity in both homogenate and solubilized preparations increased after seawater adaptation. This adaptive increase in enzyme activity was also observed in the gills and the kidney. The HCO-3-ATPase seems to be related to transport mechanisms, especially for Cl-, in osmoregulatory surfaces of the eel.

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Mentioned in this Paper

Adenosine Triphosphatases
Tissue Specificity
Freshwater eels
Structure of Pyloric Gland
Carbonic Acid Ions
Kidney
Structure of Intestinal Gland
Enzyme Activity
Hydrolase
Blood Enzyme Activity (Lab Test)

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