Results 211 to 220 of about 1,936 (237)

Anion selectivity and pumping mechanism of halorhodopsin

Biophysical Chemistry, 1995
Comparison of the amino acid sequences in the A-B and B-C interhelical loop segments in all bacteriorhodopsins and halorhodopsins has shed light on the anion selectivity and pumping mechanism of halorhodopsin. The nucleotide sequences of two haloopsins from two new halobacterial strains, shark and port, have been determined, and shark halorhodopsin was
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Spectral Tuning in Halorhodopsin: The Chloride Pump Photoreceptor

Journal of the American Chemical Society, 2013
The spectral tuning of halorhodopsin from Halobacterium salinarum (shR) during anion transport was analyzed at the molecular level using DFT-QM/MM [SORCI+Q//B3LYP/6-31G(d):Amber96] hybrid methods. Insights into the influence of Cl(-) depletion, Cl(-) substitution by N3(-) or NO3(-), and mutation of key amino acid residues along the ion translocation ...
Rhitankar, Pal, Sivakumar, Sekharan, Victor S, Batista   +2 more
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Structure and Function of Halorhodopsin

Israel Journal of Chemistry, 1995
AbstractA comprehensive review of the physiology, structure, and function of halorhodopsin (HR), the only known light‐driven anion pump, is presented. Beside the well‐studied transport function of HR in intact cells the article focuses on recent results about the molecular properties of HR.
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Modeling of halorhodopsin and rhodopsin based on bacteriorhodopsin

Proteins: Structure, Function, and Genetics, 1996
Bacteriorhodopsin (BR), halorhodopsin (HR), and rhodopsin (Rh) all belong to the class of seven-helix membrane proteins. For BR, a structural model at atomic resolution is available; for HR, diffraction data are available only down to a resolution of 6 A in the membrane plane, and for Rh, down to 9 A.
M, Neumüller, F, Jähnig
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Molecular Evolution of Rhodopsin Protein

Biology Bulletin, 2023
Yu-zhu Tong, Yunzhu Yu
semanticscholar   +1 more source

Blue Halorhodopsin from Natronobacterium pharaonis: Wavelength Regulation by Anions

Biochemistry, 1994
Halorhodopsin, the chloride pump from Natronobacterium pharaonis (pharaonis hR), was isolated under conditions of low ionic strength. The quotient between the optical densities of pharaonis hR in 4 M NaCl at 280 and 577 nm amounts to 1.1, indicating a high purity of the protein and integrity of the chromophore.
B, Scharf, M, Engelhard
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Nature of the principal photointermediate of halorhodopsin

Biochemical and Biophysical Research Communications, 1984
Two alternative hypotheses have been presented as to the nature of the principal halorhodopsin photointermediate: a) it is a form whose its absorption band is shifted from the 575 nm position to 500 or 520 nm, and b) it is a form whose absorption band is shifted to only about 565 nm, but with an altered band shape so it exhibits a fortuitous difference
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Photoelectric response of halorhodopsin from Natronobacterium pharaonis

Bioelectrochemistry and Bioenergetics, 1998
Abstract Halorhodopsin (hR) is an inward-directed light-driven chloride pump. This protein, from Natronobacterium pharaonis (abbreviated by phR), was immobilized on a transparent SnO 2 electrode to construct a sandwich-type electrochemical cell.
Koichi Koyama, Masato Sumi, Naoki Kamo, Janos K Lanyi   +3 more
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Optical perturbation of Agtr1a-containing neurons and afferents within the caudal nucleus of the solitary tract modulates sodium intake.

Physiology and Behavior
Angiotensin-II (Ang-II) production is driven by deviations in blood volume and osmolality, and serves the role of regulating blood pressure and fluid intake to maintain cardiovascular and hydromineral homeostasis.
Caitlin Baumer-Harrison, Sagar Patel, Karen A. Scott, E. Krause, Annette D. de Kloet   +4 more
semanticscholar   +1 more source

Cerebellar Purkinje Cell Activity Regulates White Matter Response and Locomotor Function after Neonatal Hypoxia

Journal of Neuroscience
Neonatal hypoxia (Hx) causes white matter (WM) injury, particularly in the cerebellum. We previously demonstrated that Hx-induced reduction of cerebellar Purkinje cell (PC) activity results in locomotor deficits.
Srikanya Kundu, Javid Ghaemmaghami, Georgios Sanidas, Nora Wolff, Abhya Vij, Chad Byrd, Gabriele Simonti, Maria Triantafyllou, Beata Jablonska, Terry Dean, Ioannis Koutroulis, Vittorio Gallo, Panagiotis Kratimenos   +12 more
semanticscholar   +1 more source