Question

Which conformation of the lollipop head of ATP synthase is responsible for converting ADP and Pi...

Which conformation of the lollipop head of ATP synthase is responsible for converting ADP and Pi into ATP?

A) Closed

B) Tight

C) Open

D) Loose

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Homework Answers

Answer #1

Answer: Open

Explanation:

The different conformations of catalytic sites are: loose, open, and tight.

ADP + Pi (substrate) binds to the open site. It is converted to ATP in tight site.

By rotating γ subunit, conformational change result into a change in the sites. Thus, ATP is released from the enzyme.

Therefore, ADP + Pi bind at the open site and New ATP is released.

In the loose site, bound ADP + Pi cannot be released.

In the tight site, condensation of ADP + Pi will form ATP. The ATP formed is bound very tightly.



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