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Process of Translation

ATP synthase ...

Question

ATP synthase enzyme consists of two parts. What are those parts? How are they arranged in the thylakoid membrane? Conformational changes occur in which part of the enzyme?

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Solution

Arrangement of ATP synthase enzyme

ATP synthase enzymes have two units, $F_{0}$ and $F_{1}$ .
$F_{0}$ subunit is present within the thylakoid membrane and $F_{1}$ subunit is present facing the stroma of the chloroplast.

Conformational change

When protons pass through the $F_{0}$ subunit of the ATP synthase, it causes conformational change in the $F_{1}$ subunit which rotates and releases ATP molecules in the stroma of the chloroplast.

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Similar questions

Q. Identify the correct statements for ATP synthase.
(i) This enzyme consists of two parts: hydrophobic membrane bound portion called F₀ & a portion that sticks out into stroma called F₁.
(ii) F₀ appears to form a channel across the membrane through which proton can pass.
(iii) The conformational change in the F₁portion of the complex synthesizes ATP.
(iv) The proton motive force that drives the synthesis of ATP is associated with this enzyme.

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Process of Translation

Standard XII Biology

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