Elsevier

Biochimica et Biophysica Acta

Volume 63, Issue 1, 10 September 1962, Pages 82-92
Biochimica et Biophysica Acta

Contraction with and without demonstrable splitting of energy-rich phosphate in turtle muscle

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Abstract

In a reinvestigation, the finding that turtle muscles can contract without demonstrably splitting phosphocreatine has been confirmed, specifically for the sartorius muscle.

Even during a recovery period of about 10 sec after contraction, no phosphocreatine utilization could be demonstrated. However, a second period of contractile activity showed a formation of creatine, although not of phosphate.

By contrast, the rectus femoris muscle was found to split creatine phosphate, and was quantitatively comparable in this regard to the frog sartorius.

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    • Cited by (0)

    ★

    This investigation was initiated at the Department of Biochemistry, Western Reserve University, 1955–1956, and continued at the Department of Medicine, The Los Angeles Country Heart Association Cardiovascular Research Laboratory, The University of California, Los Angeles, Calif. (U.S.A.).

    ★★

    address: Department of Biochemistry, Western Reserve University, Cleveland 6, Ohio (U.S.A.).

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