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Which of the following nucleating protein generates unbranched actin filaments?

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Which of the following nucleating protein generates unbranched actin filaments?

(a) formin

(b) kinesin

(c) globulin

(d) vimentin

I have been asked this question during an interview.

This intriguing question comes from Non-muscle Motility topic in portion Cytoskeleton and Cell Motility of Cell Biology

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The correct choice is (a) formin

To elaborate: Formin is a nucleating protein that helps in the nucleation of actin filaments. It helps in the generation of unbranched filaments such as those found in focal adhesions.

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