Inefficient lactate dehydrogenases of deep-sea fishes

  title={Inefficient lactate dehydrogenases of deep-sea fishes},
  author={George N Somero and Joseph F. Siebenaller},
The respiratory rates of deep-sea animals are extremely low. Deep-sea fishes may consume oxygen at rates only 5–10% those characteristic of shallow-water species1–4. These low metabolic rates are probably an adaptation to the presumed scarcity of food in deeper water4. The biochemical basis of this metabolic adaptation is a low level of enzyme activity in the skeletal muscle (but not the heart or brain), mainly because of the low enzyme concentrations in that tissue5. We report here, however… CONTINUE READING
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