High-Resolution Magic Angle Spinning NMR Study of Resin-Bound Polyalanine Peptides

Polyalanine sequences of varying length and tethered to a solid support are studied in atomic detail by high-resolution magic angle spinning (HR MAS) NMR. At high densities, it is shown that aggregation of the sequences is at the origin of synthetic difficulties. Decreasing the peptide density by di...

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Bibliographic Details
Published in:Journal of the American Chemical Society 2000-03, Vol.122 (8), p.1789-1795
Main Authors: Warrass, R, Wieruszeski, J.-M, Boutillon, C, Lippens, G
Format: Article
Language:English
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Summary:Polyalanine sequences of varying length and tethered to a solid support are studied in atomic detail by high-resolution magic angle spinning (HR MAS) NMR. At high densities, it is shown that aggregation of the sequences is at the origin of synthetic difficulties. Decreasing the peptide density by discharging the resin allows study of longer sequences without being hampered by aggregation, and α helix formation has been observed for the (Ala)12 sequence. This demonstrates that the combined use of solid phase synthesis and high resolution magic angle spinning NMR spectroscopy is a new tool that can be used advantageously in the study of aggregating structures
ISSN:0002-7863
1520-5126
DOI:10.1021/ja993718r