Abstract
1. 1. The distribution of phosphofructokinase isoenzymes have been compared among camel, rat and rabbit livers. 2. 2. Only a single phosphofructokinase isoenzyme is present in the camel liver which has shown different physical and regulatory properties from the isoenzymes of rat and rabbit liver. 3. 3. The ammonium sulphate precipitation curves of the camel and rabbit enzymes were monophasic, whereas the rat enzyme was biphasic. 4. 4. Rabbit liver phosphofructokinase was slightly more anodic than the rat enzyme, whereas the camel enzyme was the least anodic as shown by the techniques of DEAE-cellulose chromatography and cellulose acetate electrophoresis. 5. 5. Partially purified camel liver phosphofructokinase showed different regulatory properties from the rabbit and rat isoenzymes as the apparent K m values were 0.58, 0.45 and 0.82 mM respectively.
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