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Why is free rotation around the N-Cα bond of a peptide not allowed?

Why is free rotation around the N-Cα bond of a peptide not allowed? - Peptide Forum

Why is free rotation around the N-Cα bond of a peptide not allowed? - Peptide Forum. Ask and discuss questions on peptide protocols, custom peptide synthesis, peptide identification and peptide sequencing.


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Old 09-27-2012, 04:16 PM
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Default Why is free rotation around the N-Cα bond of a peptide not allowed?



Why is free rotation around the N-C? bond of a peptide not allowed?

A Steric clash from amino side chains prevents rotation from occurring.
B sp-hybridization due to the partial double bond character prevents rotation from occurring.
C Protein tertiary structure prevents rotation from occurring.
D The free electron pair of the nitrogen atom repulses the C? atom, preventing rotation from occurring.
E Free rotation around the N-C? bond of a peptide is allowed.
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Old 09-28-2012, 01:26 PM
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Thumbs up Re: Why is free rotation around the N-Cα bond of a peptide not allowed?

Ans (B)

The partial double bond nature of the peptide bond means that there is not free rotation about the C -- N bond
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