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Kinesin

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Kinesin

(Science: molecular biology) cytoplasmic protein (110 kD) that is responsible for moving vesicles and particles towards the distal end of microtubules. Differs from cytoplasmic dynein (MAP1C) in the direction in which it moves and its relative insensitivity to vanadate. It has two heavy chains and two light chains. a large number of related gene products are believed to be motor proteins active in mitosis.