Sperrtonus und Nucleosidtriphosphate

Rüegg, J. C.; Strassner, Erna

doi:10.1515/znb-1963-0207

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Sperrtonus und Nucleosidtriphosphate

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Rüegg, J. C.
Max Planck Institute for Medical Research, Max Planck Society;

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Strassner, Erna
Max Planck Institute for Medical Research, Max Planck Society;

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Citation

Rüegg, J. C., & Strassner, E. (1963). Sperrtonus und Nucleosidtriphosphate. Zeitschrift für Naturforschung, B: A Journal of Chemical Sciences, 18(2), 133-138. doi:10.1515/znb-1963-0207.

Cite as: https://hdl.handle.net/11858/00-001M-0000-002D-3D09-A

Abstract

The resting anterior byssal retractor muscle of Mytilus edulis (ABRM) contains 1 -1.2 μmol ATP and 0.6 - 0.8 μmol ADP per g wet weight, traces of AMP and 0.1 - 0.2 μmol GTP plus UTP. The ATP content and the ratio of ADP : ATP remains almost constant during contraction, catch and subsequent serotonin induced relaxation, IMP could not be detected, not even during thaw contracture. Consequently the catch (viscous tone, fused state) is a reversible rigor distinct from rigor in vertebrate skeletal muscle which is caused by ATP deficiency. ATP produces a very much stronger contraction in isolated actomyosin systems of ABRM than UTP, ITP and GTP.