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NMR Studies on the Conformation of Derivatives of the Side Chain of Oxytocin: Examples of cis--trans Isomerism

✍ Scribed by Victor J. Hruby, A. I. Brewster and J. A. Glasel

Book ID
123649975
Publisher
National Academy of Sciences
Year
1971
Tongue
English
Weight
492 KB
Volume
68
Category
Article
ISSN
0027-8424

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Nmr studies of the rates of proline cis–
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✍ Christoph Grathwohl; Kurt WΓΌthrich πŸ“‚ Article πŸ“… 1981 πŸ› Wiley (John Wiley & Sons) 🌐 English βš– 593 KB

## Abstract ^1^H‐Nmr was used to measure the rate of __cis__–__trans__ interconversion of __X__‐Pro bonds in linear and cyclic oligopeptides. __k__(cis β†’ trans) = 2.5 Γ— 10^βˆ’3^ s^βˆ’1^ at 25Β°C was found for the zwitterionic form of H‐Ala‐Pro‐OH, in good agreement with earlier measurements. Replacement