The prominent -helix secondary structure is heavily relied upon in functional proteins. What specific structural interaction is entirely responsible for actively maintaining and locking this delicate

Question

The prominent $\alpha$ -helix secondary structure is heavily relied upon in functional proteins. What specific structural interaction is entirely responsible for actively maintaining and locking this delicate helical motif?

Prashant Kotian · Accepted Answer

Correct answer: C. The -helix is established by intramolecular hydrogen bonds connecting the carbonyl oxygen of the -th residue with the amide hydrogen of the -th residue on the exact same chain, generating a rigid repeating 13-membered hydrogen-bonded ring.

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