Structures of peptides from α‐amino acids methylated at the α‐carbon,
Abstract
The structural preferences of peptides (and depsipeptides) from the achiral MeAib and Hib residues, and the chiral Iva, (αMe) Val, (αMe) Leu, and (αMe) Phe residues, as determined by conformational energy computations, x‐ray diffraction analyses, and 1 H‐nmr and spectroscopic studies, are reviewed and compared with literature data on Aib‐containing peptides. The results obtained indicate that helical structures are preferentially adopted by peptides rich in these α‐amino acids methylated at the α‐carbon. Intriguing experimental findings on the impact of the chirality of Iva, (αMe) Val, and (αMe) Phe residues on helix screw sense are illustrated. © 1993 John Wiley & Sons, Inc.
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- Authors
- Toniolo, C., Crisma, M., Formaggio, F., Valle, C., Cavicchioni, G., Precigoux, G., Aubry, A., & Kamphuis, J.
- Affiliations
- University of Padua (IT)
- University of Ferrara (IT)
- Université de Bordeaux (FR)
- DSM (Netherlands) (NL)
- Venue
- Biopolymers
- Publisher
- Wiley
- Published
- 1993-07
- Volume
- 33
- Issue
- 7
- Pages
- 1061-1072
- ISSN
- 0006-3525 (ISSN-L)
- 1097-0282
- OpenAlex
- W2013331371
- Cited by
- 238
- References
- 66
- Citations by year
- 2025: 1 · 2024: 4 · 2023: 2 · 2022: 2 · 2021: 1 · 2020: 2 · 2019: 4 · 2018: 3 · 2017: 1 · 2016: 4 · 2015: 7 · 2014: 8 · 2013: 5 · 2012: 8
- FWCI
- 1.41
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- Biopolymers (publishedVersion)
- PubMed (publishedVersion)
- Padua Research Archive (University of Padova) (submittedVersion)
- Topics
- Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Protein Structure and Dynamics
- Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Chemical Synthesis and Analysis
- Physical Sciences › Chemistry › Spectroscopy › Molecular spectroscopy and chirality
- Keywords
- α-methyl amino acids, depsipeptides, peptide conformation, helical conformation, chirality effects, IVA, conformational energy
- MeSH terms
- Amino Acid Sequence, Aminoisobutyric Acids, Hydroxybutyrates, Methylation, Models, Molecular, Molecular Sequence Data, Peptides, Stereoisomerism, Valine, X-Ray Diffraction, Protein Structure, Secondary
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