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The drug cytochalasin blocks the _____________

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The drug cytochalasin blocks the _____________

(a) ATP

(b) Microfilaments

(c) Plus-end of microfilaments

(d) Minus-end of microfilaments

This question was posed to me during an interview.

My doubt is from Cytoskeleton in portion Cytoskeleton and Cell Motility of Cell Biology

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Right option is (c) Plus-end of microfilaments

The best I can explain: The drug cytochalasin is obtained from a mold. It blocks the plus-ends of microfilaments (actin filaments) and causes depolymerization at the minus-end.

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