In the Experiment That Demonstrated That Rotational Catalysis Occurs, a Fluorescently

question 25

Multiple Choice

In the experiment that demonstrated that rotational catalysis occurs, a fluorescently labeled actin filament attached to the ATP synthase enzyme's ɤ subunit was seen to rotate when ATP was added to the enzyme, which was fixed to a cover slip. With each step in the rotational catalysis, how much could the actin filament be seen to rotate?

• A)0°
• B)360°
• C)120°
• D)90°
• E)3°

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