Low-Temperature FTIR Study ofGloeobacterRhodopsin: Presence of Strongly Hydrogen-Bonded Water and Long-Range Structural Protein Perturbation upon Retinal Photoisomerization

Biochemistry ◽  
2010 ◽  
Vol 49 (15) ◽  
pp. 3343-3350 ◽  
Author(s):  
Kyohei Hashimoto ◽  
Ah Reum Choi ◽  
Yuji Furutani ◽  
Kwang-Hwan Jung ◽  
Hideki Kandori
Keyword(s):  
Low Temperature ◽  
Long Range ◽  
Structural Protein ◽  
Ftir Study ◽  
Hydrogen Bonded

Low-temperature FTIR spectroscopy provides evidence for protein-bound water molecules in eubacterial light-driven ion pumps

2018 ◽  
Vol 20 (5) ◽  
pp. 3165-3171 ◽  
Author(s):  
Yurika Nomura ◽  
Shota Ito ◽  
Miwako Teranishi ◽  
Hikaru Ono ◽  
Keiichi Inoue ◽  
...  
Keyword(s):  
Low Temperature ◽  
Water Molecule ◽  
Ftir Spectroscopy ◽  
Proton Pump ◽  
Bound Water ◽  
Water Molecules ◽  
Ion Pumps ◽  
Functional Determinant ◽  
Ftir Study ◽  
Hydrogen Bonded

The present FTIR study showed that eubacterial light-driven H+, Na+ and Cl− pump rhodopsins contain strongly hydrogen-bonded water molecule, the functional determinant of light-driven proton pump. This explains well the asymmetric functional conversions of light-driven ion pumps.

Phase transformation and Raman spectra in BaTiO3 nanocrystals

2002 ◽  
Vol 718 ◽  
Author(s):  
Jian Yu ◽  
X. J. Meng ◽  
J.L. Sun ◽  
G.S. Wang ◽  
J.H. Chu
Keyword(s):  
Particle Size ◽  
Phase Transformation ◽  
Low Temperature ◽  
Long Range ◽  
Lattice Expansion ◽  
Inversion Symmetry ◽  
Range Interaction ◽  
Cooperative Phenomena ◽  
Long Range Interaction ◽  
Hydrothermal Methods

AbstractIn this paper, size-induced ferroelectricit yweakening, phase transformation, and anomalous lattice expansion are observed in nanocrystalline BaTiO3 (nc-BaTiO3) deriv ed b y low temperature hydrothermal methods, and they are w ellunderstood using the terms of the long-range interaction and its cooperative phenomena altered by particle size in covalen t ionic nanocrystals. In cubic nc-BaTiO3, five modes centerd at 186, 254, 308, 512 and 716 cm-1 are observed Raman active in cubic nanophase, and they are attributed to local rhombohedral distortion breaking inversion-symmetry in cubic nanophase. The254 and 308 cm-1 modes are significantly affected not only by the concentration of hydroxyl defects, but also their particular configuration. And the 806 cm-1 modes found to be closely associated with OH - absorbed on grain boundaries.

FTIR Study of Low-Temperature CO Adsorption on Cu-ZSM-5: Evidence of the Formation of Cu2+(CO)2 Species

2000 ◽  
Vol 191 (2) ◽  
pp. 480-485 ◽  
Author(s):  
Konstantin Hadjiivanov ◽  
Helmut Knözinger
Keyword(s):  
Low Temperature ◽  
Co Adsorption ◽  
Ftir Study

Low temperature FTIR study of organic molecule ozonolysis in adsorbed state. Thymine, phenol and ethylene on SiO2

1999 ◽  
pp. 667-668
Author(s):  
A. A. Tsyganenko ◽  
O. G. Chernomor ◽  
J. Lamotte ◽  
J. C. Lavalley ◽  
O. V. Manoilova ◽  
...  
Keyword(s):  
Low Temperature ◽  
Organic Molecule ◽  
Adsorbed State ◽  
Ftir Study
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