Motor proteins for microtubules

Kinesin: 14 structurally related classes. Includes those that can either stabilise,de-stabilise or bundle MTs. Kinesins are mostly plus end directed motors but some (such as kinesin-14) are minus end directed. Use ATP to generate force. Dynein: Fast minus end directed motor. Structurally unrelated to kinesins. Use ATP to generate force.