𝔖 Bobbio Scriptorium
✦   LIBER   ✦

Conformational study of phosphoserine in aqueous solutions. II—1H n.m.r. results

✍ Scribed by L. Pogliani; D. Ziessow; Ch. Krüger

Publisher
John Wiley and Sons
Year
1977
Tongue
English
Weight
486 KB
Volume
10
Category
Article
ISSN
0749-1581

No coin nor oath required. For personal study only.

✦ Synopsis

Abstract

The 270 MHz n.m.r. spectra of phosphoserine (PSer) have been measured and completely analysed for seven pD values. The resulting vicinal coupling constants ^3^J(HαHβ) and ^3^J(PHβ) are used to discuss the conformations of PSer with respect to the (Hα)CαCβ(O) and (Cα)CβO(P) bond axes. The all‐trans conformer predominates for all pD values, with its fractional population being minimal at pD values close to neutrality. The CβO bond rotamer populations agree reasonably well with those obtained from ^13^C investigations.

📜 SIMILAR VOLUMES

Conformational study of phosphoserine in
Conformational study of phosphoserine in aqueous solution. I—13C n.m.r. results
✍ L. Pogliani; D. Ziessow; Ch. Krüger 📂 Article 📅 1977 🏛 John Wiley and Sons 🌐 English ⚖ 353 KB 👁 1 views

## Abstract ^13^C chemical shifts and coupling constants of phosphoserine in aqueous solutions were studied as a function of pH values. Carboxyl and α‐amino titration shifts agree with those observed in amino acids. The analysis of the coupling constants indicates that for rotation about the (C)C

Conformational study of phosphothreonine
Conformational study of phosphothreonine in aqueous solution. H and 13C NMR results
✍ L. Pogliani; D. Ziessow 📂 Article 📅 1978 🏛 John Wiley and Sons 🌐 English ⚖ 250 KB 👁 1 views

## Abstract The 270 MHz ^1^H and 22.6 MHz ^13^C NMR spectra of DL‐phosphothreonine in D~2~O have been measured and analysed as a function of pD. The __trans__‐__trans__ conformation of the fragment H‐αC‐αC‐βOP predominates at all pD values. The C‐β—O __gauche__ contribution is notably larger fo

1H n.m.r. conformational studies of glyc
1H n.m.r. conformational studies of glycyl-L-phenylalanine and L-phenylalanyl-glycine dipeptides and their complexes with palladium (II)
✍ Henryk Kozlowski; Grażyna Formicka-Kozlowska; Boguslawa Jeżowska-Trzebiatowska 📂 Article 📅 1977 🏛 John Wiley and Sons 🌐 English ⚖ 444 KB

## Abstract The conformations of Gly‐Phe and Phe‐Gly dipeptides and those of their complexes with the Pd(II) ion has been established by means of ^1^H n.m.r. spectra over various pH ranges. In the most stable rotamer of both dipeptides the bulkiest groups, i.e. carboxylate (or carbonyl) and the aro

Stable conformations of N,N,N′,N′- tetra
Stable conformations of N,N,N′,N′- tetraisopropylthiuram disulphide and monosulphide found in low temperature 1H N.m.r. spectra
✍ Yu-ichi Takeda; Tsuneo Matsuda; Toshio Tanaka 📂 Article 📅 1977 🏛 John Wiley and Sons 🌐 English ⚖ 324 KB

## Abstract ^1^H N.m.r. spectra of __N__,__N__,__N__′,__N__′‐tetraisopropylthiuram disulphide and monosulphide in CS~2~ suggested that internal rotations both around the carbamate CN and isopropyl–nitrogen bonds are restricted at low temperatures. As a result, both compounds exist as two __dl__ pa

Kinetics of Demixing and Remixing Transi
Kinetics of Demixing and Remixing Transitions in Aqueous Solutions of Poly(N-isopropylacrylamide): A Temperature-Jump 1H NMR Study
✍ Pavel V. Yushmanov; István Furó; Ilias Iliopoulos 📂 Article 📅 2006 🏛 John Wiley and Sons 🌐 English ⚖ 141 KB

## Abstract Summary: The time course of the coil‐to‐globule collapse and intermolecular aggregation of poly(__N__‐isopropylacrylamide) in aqueous solution upon exceeding the lower critical solution temperature (LCST) are investigated by temperature‐jump ^1^H NMR spectroscopy. After the temperature