Рет қаралды 91
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Motor proteins kinesin and dynein move along microtubules.
Dynein and kinesin have footlike domains that bind to and move along the microtubule. Upper domains bind to a structure or cell component to be moved.
Most dyneins move toward the minus end of a microtubule.
Most kinesins move in the opposite direction.
This model shows how kinesin heads repeatedly inch along a microtubule.
Phosphate group transfers from ATP drive the movement.
In this way, kinesin travels along a microtubule, dragging its cellular freight with it.