Role of hydrophobic residues for the gaseous formation of helical motifs

2019 ◽  
Vol 55 (35) ◽  
pp. 5147-5150 ◽  
Author(s):  
Lin Liu ◽  
Xin Dong ◽  
Yichang Liu ◽  
Nicklas Österlund ◽  
Astrid Gräslund ◽  
...  
Keyword(s):  
Mass Spectrometry ◽  
Aqueous Solution ◽  
Secondary Structure ◽  
Gas Phase ◽  
Hydrophobic Residues ◽  
Secondary Structure Content

The secondary structure content of proteins and their complexes may change significantly on passing from aqueous solution to the gas phase (as in mass spectrometry experiments).

The Effect of Metal Atoms and Ligand Combinations in Organometallics on Excimer Laser Photoproducts and Yields

1988 ◽  
Vol 131 ◽  
Author(s):  
Y. Zhang ◽  
M. Stuke
Keyword(s):  
Mass Spectrometry ◽  
Laser Radiation ◽  
Gas Phase ◽  
Excimer Laser ◽  
Systematic Study ◽  
Ionization Mass ◽  
Laser Ionization ◽  
Metal Atoms ◽  
Excimer Laser Radiation

ABSTRACTA systematic study to find the role of different metal atoms and ligand combinations on the yield of the photoproducts generated upon irradiation of gas phase organometallics (i.e. metalalkyls) by uv excimer laser radiation was performed using laser ionization mass spectrometry.

scholarly journals Interaction between Negatively Charged Fish Gelatin and Cyclodextrin in Aqueous Solution: Characteristics and Formation Mechanism

Gels ◽  
2021 ◽  
Vol 7 (4) ◽  
pp. 260
Author(s):  
Qi Fang ◽  
Nao Ma ◽  
Keying Ding ◽  
Shengnan Zhan ◽  
Qiaoming Lou ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Particle Size ◽  
Secondary Structure ◽  
Hydrogen Bonds ◽  
Gel Strength ◽  
Random Coil ◽  
Fish Gelatin ◽  
Intermolecular Hydrogen Bonds ◽  
Hydrophobic Residues ◽  
Conformation Transitions

The effect that ratios of fish gelatin (FG) to α/β/γ cyclodextrins (α, β, γCDs) had on the phase behavior of a concentrated biopolymer mixture were comparatively investigated. This showed that the formed biopolymer mixture had the highest gel strength at ratios of FG–CD = 90:10. FG could interact with CDs to form stable soluble complexes with lower values of turbidity, particle size and ζ-potential. All of the FG–CD mixture solutions exhibited pseudo-plastic behaviors, and FG–αCD samples had the highest viscosity values than others. The addition of CDs could unfold FG molecules and make conformation transitions of FG from a random coil to β-turn, leading to the environmental change of hydrophobic residues and presenting higher fluorescence intensity, especially for βCDs. FTIR results revealed that the formation of intermolecular hydrogen bonds between FG and CD could change the secondary structure of FG. These findings might help further apply FG–CD complexes in designing new food matrixes.

scholarly journals Study of the factors that determine the transfer of water and organic compounds into the gas phase from aqueous solutions in a discharge with a liquid cathode

2021 ◽  
Vol 2100 (1) ◽  
pp. 012025
Author(s):  
A V Chistolinov ◽  
M A Khromov ◽  
R V Yakushin ◽  
M Kh Gadzhiev ◽  
A S Tyuftyaev
Keyword(s):  
Aqueous Solution ◽  
Free Surface ◽  
Aqueous Solutions ◽  
Gas Phase ◽  
Organic Compounds ◽  
Direct Current ◽  
Current Discharge ◽  
Liquid Cathode ◽  
Direct Current Discharge

Abstract A study was performed to investigate the transfer of organic compounds and water from an aqueous solution to the gas phase under the action of a direct current discharge, in which an aqueous solution that contains organic compounds plays the role of a cathode. The effect of the area of the free surface of a liquid in various reactors, as well as the effect of the stirring mode of a solution near the surface of a liquid on the rate of transfer of water and organic compounds under the action of a discharge of this type, have been investigated. It is shown that a change in the area of the free surface of a liquid has no significant effect on the rate of transfer of water and organic compounds from solution to the gas phase under the action of a direct current discharge with a liquid cathode. It is shown that the stirring mode and the temperature of the solution, on the contrary, have a very significant effect on the rate of nonequilibrium transfer of both water and organic compounds from solution to the gas phase under the action of a discharge with a liquid cathode.

scholarly journals The role of electrostatic induction in secondary isotope effects on acidity: theory and computational confirmation

2014 ◽  
Vol 38 (8) ◽  
pp. 3840-3852 ◽  
Author(s):  
E. Amitai Halevi
Keyword(s):  
Aqueous Solution ◽  
Gas Phase ◽  
Isotope Effects ◽  
Electrostatic Induction

How well can secondary isotope effects on acidity in aqueous solution be approximated by gas-phase computations on the hydrated components?

Sign in / Sign up

Export Citation Format

Share Document