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Effects of inorganic phosphate on the contractile mechanism

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Inorganic phosphate in millimolar concentrations reduces contractile tension, but increases the speed and the oscillation frequency of glycerinated insect fibrillar muscle, while power output and ATPase are little affected.


Anorganisches Phosphat hemmt die contractile Spannung und erhöht die Kontraktionsgeschwindigkeit und Oscillationsfrequenz glycerinierter fibrillärer Insektenmuskeln (Lethocerus maximus), während die mechanische Leistung und die ATPase-Aktivität kaum beeinflußt werden.

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Rüegg, J.C., Schädler, M., Steiger, G.J. et al. Effects of inorganic phosphate on the contractile mechanism. Pflugers Arch. 325, 359–364 (1971).

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  • Contractile Mechanism
  • ATP-ase
  • Phosphate-Effects
  • Insect Fibrillar Muscle


  • Kontraktiler Mechanismus
  • ATP-ase
  • Phosphat-Wirkungen
  • Fibrilläre Insektenmuskeln