Although the conformations of two linked peptide units both with glycyl and alanyl residues have been extensively studied,'-$ no systematic investigation of the energies of conformations of two linked peptide units with side chains beyond the CB atom and a comparison with the available crystallograp
Conformational preferences of side-chain protected amino acid residues and their impact in peptide synthesis
β Scribed by F. Maser; B. Klein; M. Mutter; C. Toniolo; G. M. Bonora
- Publisher
- Wiley (John Wiley & Sons)
- Year
- 1983
- Tongue
- English
- Weight
- 302 KB
- Volume
- 22
- Category
- Article
- ISSN
- 0006-3525
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β¦ Synopsis
Using the host-guest technique, tentative scales for the helix-inducing power and the (3-structure-forming potential of various side-chain protected amino acid residues in trifluoroethanol are established mainly by CD measurements. The generally lower tendency for (3-structure formation of the host-guest peptides compared to that of the host peptide is discussed. The influence of these conformational features on the solubility of the peptides is also pointed out.
π SIMILAR VOLUMES
The preferred conformations of C"-methyl phenylglycine, C"-methyl phenylalanine, and C"-methyl homophenylalanine residues, as determined in model peptides (including homopeptides) by Fourier transform ir absorption, 'H-nmr, CD, and x-ray diffraction techniques, are compared with the aim of investiga
using partial molar volume data, V t , in aqueous solution at 25Β°C for some peptides of sequence Gly-X-Gly, where X is an amino acid. These side-chain partial molar volumes are critically compared with those obtained using V data for amino acids. It is concluded that side-chain partial molar volumes