Chemical Physics LettersK. Yamauchi, S. Kuroki, K. Fujii, I. Ando, The amide proton NMR chemical shift and hydrogen-bonded structure of peptides and polypep- tides in the solid state as studied by high-frequency solid-state 1H NMR, Chem. Phys. Lett. 324 (2000) 435-439....
Kuroki, I. Ando, Proton NMR chemical shift behavior of hydrogen-bonded amide proton of glycin-containing peptides and polypeptides as studied by ab initio MO calculation, Int. J. Mol. Sci. 3 (2002) 907-913.Hori,S., Yamauchi,K., Kuroki,S. and Ando,I. (2002) Proton NMR chemical ...
Solution NMR Measurement of Amide Proton Chemical Shift Anisotropy in 15 N-Enriched Proteins. Correlation with Hydrogen Bond Length § Cross-correlation between 15N1H dipolar interactions and 1HN chemical shift anisotropy (CSA) gives rise to different relaxation rates of the doublet compon... N Tj...
I have analyzed the 1H NMR of the two chromatographic pools in a preliminary way Pool 1 has a main product that has a characteristic aldehyde proton. However, there appears to be a second product in which there are two singlets that might correspond to the fragment -N(CH3OCH3. The ...
17O and 14N NMR studies have been conducted on a series of simple amides. The effects of solvent, temperature, and solvent concentration on the relaxation rates and nuclear screening constants have been monitored. 17O chemical shifts for the amide resonance between infinite dilution in acetone and...
Furthermore, kinetic isotope effect studies suggest that the [1,2] proton shift to afford the Breslow intermediate is the turnover-limiting step. These combined results suggest that catechol, presumably in the form of catecholate, facilitates the proton transfer during that critical step. (18) ...
Structures of selected compounds investigated in this study. Compound LC-KA05 (1) was shown by NMR to exist almost exclusively in the enol form, and thus its derivatives6and7are also represented as enols. The gray boxes indicate where6and7differ from1. The stereochemistry of the C-6−C-...
Described herein are proton nmr experiments on chemically modified derivatives of ribonuclease A designed to elucidate the origin of an exchangeable resona... DJ Patel,LL Canuel,C Woodward,... - 《Biopolymers》 被引量: 118发表: 1975年 Nature and locations of the most slowly exchanging peptide NH...
All NMR spectra were recorded of about 0.3–0.6 mM solutions of the wild-type and mutant samples of rat ERp29-C in 20 mM MES (pH 4.9) at 31°C, using a Bruker Avance 800 MHz NMR spectrometer with a TCI cryoprobe. PCSs were measured as the 1H chemical shifts observed in 15N-HSQC ...
Proton nmr spectrum in chloroform-d: chemical shift in ppm (multiplicity, intensity, assignment): 5.73 (doublet, 1 H, N--H), 5.32 (multiplet, 6 H, HC--CH), 4.48 (multiplet, 1 H, methine proton), 4.23 and 4.07 (two doublets of doublets, 4 H, CH2--O), 2.32 (triplet, 4 H, ...