Studies on the conformation of amino acids X. Conformations of norvalyl, leucyl and aromatic side groups in a dipeptide unit
โ Scribed by V. Sasisekharan; P. K. Ponnuswamy
- Publisher
- Wiley (John Wiley & Sons)
- Year
- 1971
- Tongue
- English
- Weight
- 531 KB
- Volume
- 10
- Category
- Article
- ISSN
- 0006-3525
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## Abstract The ^13^C chemical shifts and spinโlattice relaxation times are reported for __cyclo__(LโProโLโLeu) and __cyclo__(LโProโDโLeu). The chemical shifts of the D and L leucyl residues in the cyclic peptides differ from each other by 1.8 and 3.6 parts per million for the ฮฑ and ฮฒ carbons, resp
## Abstract The influence of pH upon CD spectra of HโTrpโTrpโOH, HโTrpโTrpโGlyโOH, and HโGlyโTrpโTrpโOH is investigated and data are compared with those obtained for peptides containing only one tryptophyl residue. A negative Cotton effect at around 225 nm, which in previous work has been related t