Journal ArticleDOI
1H-13C selective NOE studies of the decapeptide gramicidin S
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TLDR
The cyclic decapeptide gramicidin S has been used as a model biopolymer to test the reliability of a structural method which is based on a relaxation analysis of heteronuclear selective NOEs, and carbonyl carbon resonances are unequivocally assigned.About:
This article is published in Biochemical and Biophysical Research Communications.The article was published on 1984-11-14. It has received 33 citations till now. The article focuses on the topics: Gramicidin S & Heteronuclear molecule.read more
Citations
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A variable target intensity-restrained global optimization (VARTIGO) procedure for determining three-dimensional structures of polypeptides from NOESY data: Application to gramicidin-S
TL;DR: The results on GS suggest that VARTIGO refinement is capable of yielding better quality structures, and underscores the need for a simultaneous analysis of different NOE R-factors in judging the quality of optimized structures.
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Theoretical and practical aspects of one- and two-dimensional heteronuclear overhauser experiments and selective 13C T1-determinations of heteronuclear distances
Katalin E. Kövér,Gyula Batta +1 more
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Stereochemistry of protected ornithine side chains of gramicidin S derivatives: X-ray crystal structure of the bis-Boc-tetra-N-methyl derivative of gramicidin S.
Keiichi Yamada,Masafumi Unno,Kyoko Kobayashi,Hiroyuki Oku,Hatsuo Yamamura,Shuki Araki,Matsumoto Hideyuki,Ryoichi Katakai,Masao Kawai +8 more
TL;DR: An X-ray crystallographic analysis of the bis-Ndelta-Boc-tetra-Nalpha-methyl derivative of gramicidin S, cyclo(-Val-MeOrn(Boc)-Leu-d-MePhe-Pro-)2, was undertaken successfully and found that the main chain adopts an antiparallel pleated beta-sheet conformation, but the pleated sheet is slightly twisted.
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Solution structure of folic acid. Molecular mechanics and NMR investigation.
Claudia Bonechi,Alessandro Donati,Raffaella Lampariello,Silvia Martini,Maria Pia Picchi,Maso Ricci,Claudio Rossi +6 more
TL;DR: The structure of folic acid in solution was investigated by nuclear magnetic resonance (NMR) and theoretical calculations and the accuracy of the final structure was established by the R(N MR) factor, which was calculated comparing the experimental NOESY cross-peaks intensities and the corresponding values simulated by using the complete relaxation matrix analysis (CORMA) approach.
References
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Journal ArticleDOI
Theory of Nuclear Overhauser Enhancement and 13C–1H Dipolar Relaxation in Proton‐Decoupled Carbon‐13 NMR Spectra of Macromolecules
TL;DR: In this paper, the nuclear Overhauser enhancement (NOE), the spinlattice relaxation time (T1), and the spin spin relaxation time of a 13C nucleus relaxing by a dipolar interaction with one proton under conditions of complete proton decoupling, and without assuming that the extreme narrowing limit applies.
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The crystal structure of a hydrated gramicidin S–urea complex
TL;DR: In this article, the authors reported the structure of a gramicidin S-urea complex, which is somewhat distorted from the Hodgkin-Oughton model, and showed that the structure consisted of two β-chains linked by proline residues and stabilised by four intramolecular hydrogen bonds.
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Study of internal rotations in gramicidin S by means of carbon-13 spin-lattice relaxation measurements.
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The quantitation of nuclear Overhauser effect methods for total conformational analysis of peptides in solution. Application to gramicidin S
TL;DR: The [1H:1H] nuclear Overhauser effects (NOE's) and spin-lattice relaxation times (T1's) are reported for the backbone protons of the decapeptide gramicidin S and the interproton distances calculated are consistent with a II' beta-turn/antiparallel beta-sheet conformation.
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High field carbon-13 NMR spectroscopy. Conformational mobility in gramicidin S and frequency dependence of 13C spin-lattice relaxation times
TL;DR: The use of superconducting solenoids in 13C NMR can result in a substantial increase in spectral resolution over that obtained at commonly employed magnetic fields.
Related Papers (5)
The quantitation of nuclear Overhauser effect methods for total conformational analysis of peptides in solution. Application to gramicidin S
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