Cl− Concentration Dependence of Photovoltage Generation by Halorhodopsin from Halobacterium salinarum
نویسندگان
چکیده
منابع مشابه
Crystal structure of Halobacterium salinarum halorhodopsin with a partially depopulated primary chloride-binding site.
The transmembrane pump halorhodopsin in halophilic archaea translocates chloride ions from the extracellular to the cytoplasmic side upon illumination. In the ground state a tightly bound chloride ion occupies the primary chloride-binding site (CBS I) close to the protonated Schiff base that links the retinal chromophore to the protein. The light-triggered trans-cis isomerization of retinal cau...
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The identification of 114 integral membrane proteins from Halobacterium salinarum was achieved using liquid chromatography/tandem mass spectrometric (LC/MS/MS) techniques, representing 20% of the predicted alpha-helical transmembrane proteins of the genome. For this experiment, a membrane preparation with only minor contamination by soluble proteins was prepared. From this membrane preparation ...
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Protein phosphorylation plays an important role in the two-component system based signal transduction pathways in bacteria and in archaea. These cascades have been identified also in the extremely halophilic archaeon Halobacterium salinarum and are well understood. Beside these protein phosphorylation events in which phosphorylation of histidine and aspartate residues are crucial, only little i...
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The kinetic mechanism of glucose dehydrogenase (EC 1.1.1.47) from Halobacterium salinarum was studied by initial velocity and product inhibition methods. The results suggest that both, in the forward and reverse direction, the reaction mechanism is of Bi Bi sequential ordered type involving formation of ternary complexes. NADP+ adds first and NADPH formed dissociates from the enzyme last. For t...
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Halite crystals were selected from a 186 m subsurface core taken from the Badwater salt pan, Death Valley, California to ascertain if halophilic Archaea and their associated 16S rDNA can survive over several tens of thousands of years. Using a combined microscope microdrill/micropipette system, fluids from brine inclusions were aseptically extracted from primary, hopper texture, halite crystals...
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ژورنال
عنوان ژورنال: Biophysical Journal
سال: 2002
ISSN: 0006-3495
DOI: 10.1016/s0006-3495(02)73941-6