Carbonic anhydrase in flounder erythrocytes

Abstract

1. 1. The blood carbonic anhydrase activity of the starry flounder was found to be approximately 40 enzyme units per milliliter of blood. These findings are in contrast with previously published reports on the absence of carbonic anhydrase activity in flounder blood. 2. 2. Carbonic anhydrase in the blood of Rainbow trout is not found exclusively in the cytosol, as in mammalian erythrocytes. It is suggested that the major portion of erythrocytic carbonic anhydrase is associated with the plasma membrane. 3. 3. The applicability of previous assay methods are discussed.