Glycolytic and gluconeogenic enzymes in the quahog, Mercenaria mercernaria

Abstract

• 1.

  1. A number of key glycolytic and gluconeogenic enzymes were identified in the foot, mantle and gill tissue of the quahog, Mercenaria mercenaria.

• 2.

  2. Catalytic rates averaged about 4 per cent of the rates found in rat liver, but revealed a general similarity in proportional enzyme activity between molluscan and mammalian tissue.

• 3.

  3. Quahogs maintained under conditions of partial starvation showed changes in glycogen, glucose-6-phosphate dehydrogenase and fructose diphosphatase levels similar to those observed in mammalian tissue.