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[Microtubule-associated proteins].

F F Severin

    Biokhimiia (Moscow, Russia)
    |June 1, 1991
    PubMed
    Summary
    This summary is machine-generated.

    Microtubules, essential for cell structure and transport, rely on microtubule-associated proteins (MAPs). These MAPs regulate tubulin polymerization and mediate interactions, while motor proteins like kinesin and dynein drive intracellular transport.

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    Area of Science:

    • Cell Biology
    • Cytoskeleton Dynamics
    • Molecular Motor Proteins

    Context:

    • Microtubules form the cell's cytoskeleton, crucial for organization and intracellular transport.
    • Microtubule-associated proteins (MAPs) are key regulators of microtubule function.
    • MAPs influence tubulin polymerization and mediate interactions with other cellular components.

    Purpose:

    • To review the composition and functional roles of MAPs in microtubule dynamics.
    • To describe the mechanisms of intracellular transport mediated by motor proteins.
    • To detail the biochemical properties of kinesin and dynein.

    Summary:

    • Structural MAPs control tubulin polymerization and stabilize microtubule interactions with filaments and organelles.
    • Translocator proteins, kinesin and dynein, utilize ATP hydrolysis to move cargo along microtubules.

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  • Kinesin facilitates anterograde transport (to the distal end), while dynein mediates retrograde transport (to the cell body).

    • Impact:

    • Provides a comprehensive overview of microtubule-associated proteins and their roles in cellular architecture.
    • Elucidates the molecular mechanisms underlying intracellular transport, vital for cell function and survival.
    • Highlights the distinct functions of kinesin and dynein in directional cargo movement.