12. Energy Trading within the Cell

  1. Stephen R. Bolsover1,
  2. Jeremy S. Hyams2,
  3. Elizabeth A. Shephard3,
  4. Hugh A. White3 and
  5. Claudia G. Wiedemann1

Published Online: 27 JAN 2004

DOI: 10.1002/047146158X.ch12

Cell Biology: A Short Course, Second Edition

Cell Biology: A Short Course, Second Edition

How to Cite

Bolsover, S. R., Hyams, J. S., Shephard, E. A., White, H. A. and Wiedemann, C. G. (2003) Energy Trading within the Cell, in Cell Biology: A Short Course, Second Edition, John Wiley & Sons, Inc., Hoboken, NJ, USA. doi: 10.1002/047146158X.ch12

Author Information

  1. 1

    Department of Physiology, University College, London, UK

  2. 2

    Department of Biology, University College, London, UK

  3. 3

    Department of Biochemistry and Molecular Biology, University College, London, UK

Publication History

  1. Published Online: 27 JAN 2004
  2. Published Print: 14 NOV 2003

ISBN Information

Print ISBN: 9780471263937

Online ISBN: 9780471461586

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Keywords:

  • Gibbs free energy;
  • energy currency;
  • NADH;
  • ATP;
  • hydrogen ion gradient;
  • sodium gradient;
  • electron transport chain;
  • ATP synthase;
  • sodium/potassium ATPase;
  • photosynthesis

Summary

Reactions with a negative Gibbs free energy change proceed. Reactions with a positive Gibbs free energy can be caused to proceed by linking them to a reaction with a negative free energy change. Four cellular energy currencies can be used in this way. In this chapter we introduce the four currencies and the carriers that interconvert them, two of which are found in mitochondria. Chloroplasts carry out a similar conversion to trap the energy of light.