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Cell membranes; barriers, regulators and transducers?

K Simkiss1

  • 1School of Animal and Microbial Sciences, University of Reading, UK. K.Simkiss@reading.ac.uk

Comparative Biochemistry and Physiology. Part A, Molecular & Integrative Physiology
|October 17, 1998
PubMed
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The cell membrane functions as a homeostatic regulatory system, controlling fluidity, volume, and ion composition. This perspective helps understand cellular regulation and transport in response to environmental stresses.

Area of Science:

  • Cell Biology
  • Physiology
  • Biophysics

Background:

  • The traditional view of the cell membrane as a static barrier is outdated.
  • Recent decades have shifted the paradigm to a dynamic, homeostatic regulatory system.
  • Homeostatic systems utilize control, feedback, and error detection mechanisms.

Purpose of the Study:

  • To explore the homeostatic regulatory control of membrane fluidity, cell volume, and ion composition.
  • To investigate the roles of extracellular, intracellular, and stored calcium in these regulatory processes.
  • To examine potential conflicts between cellular regulation and transport, and the specificity of membrane functions.

Main Methods:

  • Conceptual analysis of cell membrane function through the lens of homeostatic feedback systems.

Related Experiment Videos

  • Examination of calcium's involvement in cellular regulation.
  • Relating membrane function analysis to adaptations in environmental stress.

    • Main Results:

    • The cell membrane can be effectively modeled as a homeostatic regulatory system.
    • Control of membrane fluidity, cell volume, and ion composition aligns with homeostatic principles.
    • Calcium plays a significant role in regulating these cellular parameters.

    Conclusions:

    • Viewing the cell membrane as a homeostatic system provides insights into cellular regulation and transport.
    • Understanding membrane specificity and potential regulatory conflicts is crucial.
    • This framework aids in studying cellular adaptations to environmental challenges.