Hydrogen bonding affects the [NiFe] active site of Desulfovibrio vulgaris Miyazaki F Hydrogenase: A hyperfine sublevel correlation spectroscopy and density functional theory study
Article Abstract:
Pulse electron paramagnetic resonance and hyperfine sublevel correlation spectroscopy are used top investigate nitrogen coordination of the active site of [NiFe] hydrogenase of Desulfovibrio vulgaris Miyazaki F in its oxidized 'ready' state. The strength of the hydrogen bond between Hi88 and Cys549 in the Ni-B redox state by elctron spin-echo envelope modulation (ESEEM) and hyperfine sublevel correlation (HYSCORE) spectroscopy in combination with density functional theory (DFT) calculations.
Publication Name: Journal of Physical Chemistry B
Subject: Chemicals, plastics and rubber industries
ISSN: 1520-6106
Year: 2006
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Charge recombination fluorescence in photosystem I reaction centers from Chlamydomonas reinhardtii
Article Abstract:
The fluorescence kinetics of photosystem I (PS I) core particles from Chlamydomonas reinhardtii are measured with picosecond resolution in order to test a previous hypothesis suggesting a charge recombination mechanism for the early electron-transfer and the fluorescence kinetic. It is concluded that the charge separation kinetics is trap-limited in PS I cores devoid of red antenna states such as C. reinhardtii.
Publication Name: Journal of Physical Chemistry B
Subject: Chemicals, plastics and rubber industries
ISSN: 1520-6106
Year: 2005
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Structural, infrared, and density functional theory studies of N,N,N',N'-tetramethylimidazolidinium dichloride: a model for cation-anion association of headgroups and counterions in the interfacial regions of Gemini micelles
Article Abstract:
The application of N,N,N',N'-tetramethylimidazolidinium dichloride (1-lm-1 2Cl) as a model system for cation-anion interactions in the interfacial regions of Gemini micelles is reported. The crystals of 1-lm-1 2Cl consist of imidazolidinium dications linked to two apical and six equatorial chloride ions by an extensive network of C-H...Cl hydrogen bonds.
Publication Name: Journal of Physical Chemistry B
Subject: Chemicals, plastics and rubber industries
ISSN: 1520-6106
Year: 2007
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