Motional properties of two vicinally disubstituted trisaccharides as studied by multiple-field carbon-13 NMR relaxation

Article Abstract:

The motional properties of two vicinally disubstituted trisaccharides were investigated in a solvent mixture of 2H2O:DMSOd6. Multiple-field carbon-13 T1 and T2 NMR relaxation and nuclear Overhauser effect measurements were performed outside the extreme-narrowing regime at three temperatures 283, 303 and 323 degrees K and four magnetic field strengths 6.3, 9.4, 11.7 and 14.1 T. The results showed that the branch-point residue exhibited more restricted mobility than the terminal residues in both trisaccharides.

Biomolecules, Relaxation (Nuclear physics)

---

Exploring the binding of serotonin of the 5-[HT.sub.3] receptor by density functional theory

Article Abstract:

A series of ab initio calculations to evaluate the effects of mutating three tyrosines (Tyr143, Tyr 153 and Tyr243) on the binding of serotonin (5-HT) to 5-[HT.sub.3] receptor, based on the density functional theory are mentioned. The empirical outcomes indicate the presence of hydrogen bond between the 5-HT and Tyr 153 but no between 5-HT and Tyr 143, confirming the data available from previous empirical studies and a unique mixed hydrogen bond/ cation-pie interaction between Tyr 243 and 5-HT is observed.

Density functionals, Density functional theory, Serotonin, Structure, Report

---

Probing segmental mobility in the cyanogenic glycoside amygdalin by (super 13)C solid-state NMR

Article Abstract:

Carbon-13 MAS NMR spectroscopy gives information about segmental mobility in disordered solids. NMR is useful to study carbohydrate-protein interactions.

Steroids (Organic compounds), Steroids

Similar abstracts:

• Abstracts: Mechanolysis of glucose-based polysaccharides as studied by electron spin resonance
• Abstracts: Fundamental reactions in illuminated titanium dioxide nanocrystallite layers studied by pulsed laser. Laser photolysis of TiO2 layers in the presence of aqueous iodide
• Abstracts: Bilayer partition coefficients of alkanols: predicted effects of varying lipid composition. Methodological issues in lipid bilayer simulations
• Abstracts: Cycloadditions on diamond (100) 2 X 1: Observation of lowered electron affinity due to hydrocarbon adsorption
• Abstracts: Phylloquinone and related radical anions studied by pulse electron nuclear double resonance spectroscopy at 34 GHz and density functional theory

This website is not affiliated with document authors or copyright owners. This page is provided for informational purposes only. Unintentional errors are possible.