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Biol Bull 127: 317-323. (October 1964)
© 1964 Marine Biological Laboratory
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SUCCINOXIDASE ACTIVITY IN HOMOGENATES OF DUGESIA DOROTOCEPHALA

WILLIAM L. MENGEBIER 1 and MARIE M. JENKINS 1

1 Department of Biology, Madison College, Harrisonburg, Virginia

1. The presence of succinoxidase activity in homogenates of Dugesia dorotocephala was investigated, utilizing the Warburg technique.

2. Succinoxidase activity was found to be greater in fed animals than in those starved for 48 hours.

3. Enzyme activity was found to be proportional to enzyme concentration; the activity of the enzyme was inhibited by the addition of KCN and urethane.

4. Optimum enzyme activity occurred at a pH of 8.3, a value considerably higher than the figure quoted for vertebrate tissue.






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