Koehler, Joerg and Erlach, Markus Beck and Crusca, Edson and Kremer, Werner and Munte, Claudia E. and Meier, Alexander and Kalbitzer, Hans Robert (2014) Pressure response of amide one-bond J-couplings in model peptides and proteins. JOURNAL OF BIOMOLECULAR NMR, 60 (1). pp. 45-50. ISSN 0925-2738, 1573-5001
Full text not available from this repository. (Request a copy)Abstract
The pressure dependence of the one-bond indirect spin-spin coupling constants (1) J (N-H) was studied in the protected tetrapeptides Ac-Gly-Gly-Xxx-Ala-NH2 (with Xxx being one of the 20 proteinogenic amino acids). The response of the (1) J (N-H) coupling constants is amino acid type specific, with an average increase of its magnitude by 0.6 Hz at 200 MPa. The variance of the pressure response is rather large, the largest pressure effect is observed for asparagine where the coupling constant becomes more negative by -2.9 Hz at 200 MPa. The size of the J-coupling constant at high pressure is positively correlated with its low pressure value and the beta-propensity, and negatively correlated with the amide proton shift and the first order nitrogen pressure coefficient and the electrostatic solvation free energy.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | NMR-SPECTROSCOPY; CHEMICAL-SHIFTS; N-15; RELAXATION; DEPENDENCE; CONSTANTS; H-1-NMR; SPECTRA; RESIDUE; STATES; Tetrapeptide; High pressure; NMR spectroscopy; Random coil; One-bond J-coupling; Amide group |
| Subjects: | 500 Science > 570 Life sciences |
| Divisions: | Biology, Preclinical Medicine > Institut für Biophysik und physikalische Biochemie > Prof. Dr. Dr. Hans Robert Kalbitzer |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 28 Aug 2019 07:56 |
| Last Modified: | 28 Aug 2019 07:56 |
| URI: | https://pred.uni-regensburg.de/id/eprint/9652 |
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