The Concept of Phosphate Compounds of High and Low Energy

  • Leopoldo de Meis

Abstract

Life requires that different forms of energy are continuously interconverted in the cell. For this purpose phosphate compounds are used as the common currency of energy exchange and adenosine triphosphate (ATP) is the principal carrier of energy in the living cell. The hydrolysis of ATP is usually coupled with work. This can be mechanical, as observed in muscle contraction, chemical, as for the synthesis of molecules or osmotic when a gradient is formed across a membrane. It has been shown that several processes of energy conversion are reversible. Thus, several membrane bond ATPase hydrolyze ATP in order to build up an ionic gradient across a membrane and in the reverse process, the energy derived from the gradient can be used to synthesize ATP from ADP and Pi

Keywords

Sarcoplasmic Reticulum Water Activity Catalytic Site Creatine Phosphate Catalytic Cycle 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer Science+Business Media New York 1997

Authors and Affiliations

  • Leopoldo de Meis
    • 1
  1. 1.Instituto de Ciências Biomedicas Departamento de Bioquímica MedicaUniversidade Federal do Rio de JaneiroRio de JaneiroBrazil

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