You Discover a Protein, MtA, and Find That It Binds

question 38

Multiple Choice

You discover a protein, MtA, and find that it binds to the plus ends of microtubules in cells.The hypothesis that best explains this localization is that MtA

• A)is involved in stabilizing microtubules.
• B)binds to GTP-bound tubulin on microtubules.
• C)is important for the interaction of microtubules with the centrosome.
• D)will not bind to purified microtubules in a test tube.

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