Indicate if each of the following descriptions applies to (1) EB1, (2) kinesin-1, (3) kinesin-13, or (4) katanin. Your answer would be a four-digit number composed of digits 1 to 4 only, e.g. 1432.
( ) This is a microtubule-severing protein that can release microtubules from the microtubule-organizing centers.
( ) It increases the frequency of catastrophe by deforming microtubule protofilaments.
( ) This is a conventional motor protein that moves toward the plus end of a microtubule.
( ) It recognizes the structure of a growing microtubule end and binds to it, helping other proteins to also bind to the plus end.

Question

Indicate if each of the following descriptions applies to (1) EB1, (2) kinesin-1, (3) kinesin-13, or (4) katanin. Your answer would be a four-digit number composed of digits 1 to 4 only, e.g. 1432.
( )	This is a microtubule-severing protein that can release microtubules from the microtubule-organizing centers.
( )	It increases the frequency of catastrophe by deforming microtubule protofilaments.
( )	This is a conventional motor protein that moves toward the plus end of a microtubule.
( )	It recognizes the structure of a growing microtubule end and binds to it, helping other proteins to also bind to the plus end.

Quizplus · Accepted Answer

Kinesin-1, also called the "conventional kinesin", is a plus-end directed microtubule motor. Katanin, named after the Japanese word for "sword" is an ATP-dependent microtubule-severing protein. EB1 and kinesin-13 are +TIPs. The latter also acts as a catastrophe factor.

Indicate If Each of the Following Descriptions Applies to (1)