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Cited by 272

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The X‐Pro peptide bond as an nmr probe for conformational studies of flexible linear peptides

Grathwohl, Christoph, Wüthrich, Kurt·1976·Biopolymers

Abstract

The equilibrium between the cis and trans forms of X‐Pro peptide bonds can readily be measured in the 13 C nmr spectra. In the present paper we investigate how observation of this equilibrium could be used as an nmr probe for conformational studies of flexible polypeptide chains. The experiments include studies by 13 C nmr of a series of linear oligopeptides containing different X‐L‐Pro peptide bonds, with X = Gly, L‐Ala, L‐Leu, L‐Phe, D‐Ala, D‐Leu, and D‐Phe. Overall the study confirms that X‐Pro peptide bonds can generally be useful as 13 C nmr probes reporting the formation of nonrandom conformation in flexible polypeptide chains. It was found that the cis–trans equilibrium of X‐Pro is greatly affected by the side chain of X and the configuration of the α‐carbon atom of X. On the basis of these observations some general rules are suggested for a practical applications of the X‐Pro nmr probes in conformational studies of polypeptide chains.

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Metadata

Authors
Grathwohl, C., & Wüthrich, K.
Venue
Biopolymers
Publisher
Wiley
Published
1976-10
Volume
15
Issue
10
Pages
2025-2041
ISSN
  • 0006-3525 (ISSN-L)
  • 1097-0282
OpenAlex
W2089058369
Cited by
272
References
9
FWCI
4.77
Type
journal article
Language
en
Open access
closed

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CoChat. (2026). Citation check: The X‐Pro peptide bond as an nmr probe for conformational studies of flexible linear peptides. https://app.cochat.ai/papers/10.1002/bip.1976.360151012
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Grathwohl, C., & Wüthrich, K. (1976). The X‐Pro peptide bond as an nmr probe for conformational studies of flexible linear peptides. Biopolymers. https://doi.org/10.1002/bip.1976.360151012

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