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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)

Cytoplasmic dynein is a minus end-directed motor for membranous organelles.

The role of cytoplasmic dynein in microtubule-based organelle transport was examined using a reconstituted assay developed from chick embryo fibroblasts. Factors present in a high-speed cytosol caused the movement of purified organelles on microtubules predominantly in the minus end direction. Inactivation of cytoplasmic dynein in the high-speed cytosol by vanadate-mediated UV photocleavage inhibited minus end-directed organelle motility by over 90%. Addition of purified cytoplasmic dynein to the inactive cytosol restored minus end-directed organelle motility, although purified cytoplasmic dynein by itself did not support organelle movement. We propose that cytoplasmic dynein is the motor for minus end-directed organelle movement, but that additional cytosolic factors are also required to produce organelle motility.[1]


  1. Cytoplasmic dynein is a minus end-directed motor for membranous organelles. Schroer, T.A., Steuer, E.R., Sheetz, M.P. Cell (1989) [Pubmed]
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