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The sarcoplasmic reticulum: a comparative study.

F Franciolini

    Comparative Biochemistry and Physiology. A, Comparative Physiology
    |January 1, 1985
    PubMed
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    Cellular structures regulating intracellular calcium levels are diverse and linked by evolution. Calcium ions act as crucial messengers in movement-related processes across species.

    Area of Science:

    • Cell Biology
    • Evolutionary Biology
    • Biochemistry

    Background:

    • Cellular membranes play a key role in regulating intracellular calcium levels.
    • Calcium ions (Ca2+) are vital intracellular messengers involved in numerous cellular processes.
    • The evolution of calcium-regulating structures is not well understood.

    Purpose of the Study:

    • To describe the diversity of cellular membrane structures involved in intracellular calcium regulation.
    • To present a simplified evolutionary model for these calcium-regulating structures.
    • To highlight the early utilization of calcium as an intracellular messenger in the history of life.

    Main Methods:

    • Literature review of diverse organisms and cell types.
    • Analysis of cellular processes involving calcium ions as triggers or modulators.

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  • Comparative analysis of membrane structures and their protein components.

    • Main Results:

    • Diverse cellular membrane structures regulate intracellular calcium across organisms.
    • Calcium ions act as triggers/modulators in movement-related cellular processes.
    • A five-stage evolutionary model suggests early use of calcium as a messenger.

    Conclusions:

    • Cellular structures for calcium regulation show evolutionary links from simple to complex organisms.
    • The use of calcium as an intracellular messenger is ancient.
    • Further research on membrane architecture and protein components is needed to validate evolutionary hypotheses.