Conformational Preferencesof trans-1,2- and cis-1,3-Cyclohexanedicarboxylic Acids in Water and Dimethyl Sulfoxide as a Function of the Ionization State As Determined from NMR Spectroscopy and Density Functional Theory Quantum Mechanical Calculations
Conformational Preferencesof trans-1,2- and cis-1,3-Cyclohexanedicarboxylic Acids in Water and Dimethyl Sulfoxide as a Function of the Ionization State As Determined from NMR Spectroscopy and Density Functional Theory Quantum Mechanical Calculations
A large geometric distortion in the first photointermediate of rhodopsin, determined by double-quantum solid-state NMR
A large geometric distortion in the first photointermediate of rhodopsin, determined by double-quantum solid-state NMR
Abstract Double-quantum magic-angle-spinning NMR experiments were performed on 11,12-13C2-retinylidene-rhodopsin under illumination at low temperature, in order to characterize torsional angle changes at the C11-C12 photoisomerization site. The sample was illuminated in the NMR rotor at low temperature (~120 K) in order to trap the primary photointermediate, bathorhodopsin. The NMR data are consistent with a strong torsional twist of the HCCH moiety at the...
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05-29-2012 01:00 AM
[NMR thesis] I. Quantum-mechanical chemical exchange. II. NMR of semiconductors
I. Quantum-mechanical chemical exchange. II. NMR of semiconductors
Kurur, Narayanan Damodaran (1992) I. Quantum-mechanical chemical exchange. II. NMR of semiconductors. Dissertation (Ph.D.), California Institute of Technology. http://resolver.caltech.edu/CaltechTHESIS:09022011-090934651
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NMR theses
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09-02-2011 07:31 PM
Addressing the Stereochemistry of Complex Organic Molecules by Density Functional Theory-NMR: Vannusal B in Retrospective
Addressing the Stereochemistry of Complex Organic Molecules by Density Functional Theory-NMR: Vannusal B in Retrospective
Giacomo Saielli, K. C. Nicolaou, Adrian Ortiz, Hongjun Zhang and Alessandro Bagno
http://pubs.acs.org/appl/literatum/publisher/achs/journals/content/jacsat/0/jacsat.ahead-of-print/ja201108a/aop/images/medium/ja-2011-01108a_0003.gif
Journal of the American Chemical Society
DOI: 10.1021/ja201108a
http://feeds.feedburner.com/~ff/acs/jacsat?d=yIl2AUoC8zA
http://feeds.feedburner.com/~r/acs/jacsat/~4/hTB3xm5f79k
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03-25-2011 08:21 PM
Density functional calculations of backbone 15N shielding tensors in beta-sheet and turn residues of protein G
Density functional calculations of backbone 15N shielding tensors in beta-sheet and turn residues of protein G
Abstract We performed density functional calculations of backbone 15N shielding tensors in the regions of beta-sheet and turns of protein G. The calculations were carried out for all twenty-four beta-sheet residues and eight beta-turn residues in the protein GB3 and the results were compared with the available experimental data from solid-state and solution NMR measurements. Together with the alpha-helix data, our calculations cover 39 out of the 55 residues (or 71%) in GB3....
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02-11-2011 08:36 PM
[NMR paper] NMR structure determination of proteins supplemented by quantum chemical calculations
NMR structure determination of proteins supplemented by quantum chemical calculations: detailed structure of the Ca2+ sites in the EGF34 fragment of protein S.
Related Articles NMR structure determination of proteins supplemented by quantum chemical calculations: detailed structure of the Ca2+ sites in the EGF34 fragment of protein S.
J Biomol NMR. 2005 Feb;31(2):97-114
Authors: Hsiao YW, Drakenberg T, Ryde U
We present and test two methods to use quantum chemical calculations to improve standard protein structure refinement by molecular...
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11-24-2010 11:14 PM
[NMR paper] Limits of NMR structure determination using variable target function calculations: ri
Limits of NMR structure determination using variable target function calculations: ribonuclease T1, a case study.
http://www.ncbi.nlm.nih.gov/corehtml/query/egifs/http:--linkinghub.elsevier.com-ihub-images-PubMedLink.gif Related Articles Limits of NMR structure determination using variable target function calculations: ribonuclease T1, a case study.
J Mol Biol. 1997 Feb 21;266(2):400-23
Authors: Pfeiffer S, Karimi-Nejad Y, Rüterjans H
Limits of NMR structure determination using multidimensional NMR spectroscopy, variable target function...
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08-22-2010 03:31 PM
[NMR paper] Limits of NMR structure determination using variable target function calculations: ri
Limits of NMR structure determination using variable target function calculations: ribonuclease T1, a case study.
http://www.ncbi.nlm.nih.gov/corehtml/query/egifs/http:--linkinghub.elsevier.com-ihub-images-PubMedLink.gif Related Articles Limits of NMR structure determination using variable target function calculations: ribonuclease T1, a case study.
J Mol Biol. 1997 Feb 21;266(2):400-23
Authors: Pfeiffer S, Karimi-Nejad Y, Rüterjans H
Limits of NMR structure determination using multidimensional NMR spectroscopy, variable target function...
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08-22-2010 03:03 PM
Density functional calculations of 15N chemical shifts in solvated dipeptides
Density functional calculations of 15N chemical shifts in solvated dipeptides
Ling Cai, David Fushman and Daniel S. Kosov
Journal of Biomolecular NMR; 2008; 41(2) pp 77 - 88
Abstract:
We performed density functional calculations to examine the effects of solvation, hydrogen bonding, backbone conformation, and the side chain on 15N chemical shielding in proteins. We used N-methylacetamide (NMA) and N-formyl-alanyl-X (with X being one of the 19 naturally occurring amino acids excluding proline) as model systems. In addition, calculations were performed for selected fragments from...