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Related Experiment Videos

Membrane protein oligomeric structure and transport function.

M Klingenberg

    Nature
    |April 9, 1981
    PubMed
    Summary
    This summary is machine-generated.

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    Membrane transport proteins often form asymmetric dimeric structures. This unique arrangement facilitates the efficient movement of nutrients across cell membranes.

    Area of Science:

    • Biochemistry
    • Molecular Biology
    • Cell Biology

    Background:

    • Membrane proteins are crucial for cellular functions.
    • Transport proteins facilitate the movement of substances across cell membranes.
    • Understanding protein structure is key to understanding function.

    Purpose of the Study:

    • To describe the common structural organization of membrane transport proteins.
    • To explain how this structure relates to their function.

    Main Methods:

    • Analysis of existing structural data for membrane proteins.
    • Comparative structural analysis.

    Main Results:

    • Membrane-spanning proteins frequently exhibit a dimeric structure.

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  • This dimeric structure is typically asymmetric across the membrane.
  • The axis of symmetry is perpendicular to the membrane plane.

    • Conclusions:

    • The asymmetric dimeric structure is a conserved feature of membrane transport proteins.
    • This structural arrangement is optimized for nutrient transport across the cell membrane.