Dynein

Dynein is a class of protein found in biological cells and is involved in their reproduction. Dyneins can be divided into two groups: cytoplasmic dynein and axonemal dynein. Both forms are minus end directed motors - they move along microtubules towards their minus end.

Dynein is a protein complex made up of many smaller subunits. cytoplasmic and axonemal dynein contain some of the same components, however they also contain some unique subunits, too.

The axonemal dynein acts to activate a sliding within flagellar microtubules and is found only in cells which are flagellated, whereas the cytoplasmic dynein is found in all cells and performs functions necessary for cell survival such as organelle transport and centrosome assembly.

Dynein is one of the motor proteins able to convert chemical energy contained in ATP into mechanical energy of movement.

See also: Kinesin

Template:Cellbio-stub

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