Bacteriorhodopsin (Bop) is a protein used by Archaea, most notably by haloarchaea, a class of the Euryarchaeota. It acts as a proton pump; that is, it...
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Electrochemical gradient (section Bacteriorhodopsin)
respective cells: bacteriorhodopsin and noncyclic photophosphorylation and oxidative phosphorylation.[citation needed] The way bacteriorhodopsin generates a...
24 KB (2,757 words) - 09:30, 20 December 2024
Microbial rhodopsin (section Bacteriorhodopsin)
light sensors. For example, the proteins from halobacteria include bacteriorhodopsin and archaerhodopsin, which are light-driven proton pumps; halorhodopsin...
33 KB (3,637 words) - 04:26, 4 June 2024
Some members of the family, Homologous rhodopsin-like pigments, i.e. bacteriorhodopsin (of which there are more than 800 types) have Sensory Functions like...
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unfolded segments covered by the detergent. For example, the "unfolded" bacteriorhodopsin in SDS micelles has four transmembrane α-helices folded, while the...
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and probably originated from bacteriorhodopsin (see below: under #Archaea). Halobacteria use the pigment bacteriorhodopsin which acts directly as a proton...
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thylakoids or, in rare cases, membrane-bound retinal derivatives such as bacteriorhodopsin. The vast majority of known photoautotrophs perform photosynthesis...
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All-trans-retinal is also an essential component of microbial opsins such as bacteriorhodopsin, channelrhodopsin, and halorhodopsin, which are important in bacterial...
33 KB (3,318 words) - 03:35, 29 November 2024
employs a pigment similar to those used for vision in animals. The bacteriorhodopsin changes its configuration in response to sunlight, acting as a proton...
109 KB (11,697 words) - 17:17, 26 December 2024
form of ATP. In the Halobacteria, light-activated ion pumps like bacteriorhodopsin and halorhodopsin generate ion gradients by pumping ions out of and...
159 KB (16,791 words) - 11:16, 21 December 2024
they extracted energy in the green portion of the spectrum using bacteriorhodopsin. The new organisms that then later came to dominate the extraction...
88 KB (10,508 words) - 14:46, 23 December 2024
After the middle of the 1970s, his lab studied the biochemistry of bacteriorhodopsin, a membrane protein that converts light energy into chemical energy...
33 KB (2,841 words) - 09:04, 26 November 2024
Chemiosmotic coupling between the energy of sunlight, bacteriorhodopsin and phosphorylation (chemical energy) during photosynthesis in the halophilic...
25 KB (3,154 words) - 13:29, 22 July 2024
5-oxoprolinase. Pyroglutamate is found in many proteins including bacteriorhodopsin. N-terminal glutamic acid and glutamine residues can spontaneously...
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and large blooms of haloarchaea appear reddish from the pigment bacteriorhodopsin, related to the retinal pigment rhodopsin, which it uses to transform...
29 KB (2,918 words) - 21:20, 28 November 2024
between the IMP (in this case the bacterial phototrapping pigment, bacteriorhodopsin) and the membrane formed by the phospholipid bilayer is illustrated...
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through the G protein transducin. Retinaldehyde also forms a part of bacteriorhodopsin, a light-induced proton pump found in some archaea. Experimentally...
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work on the structure of bacteriorhodopsin without Unwin. In 1990 Henderson published an atomic model of bacteriorhodopsin by electron crystallography...
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salt concentration. Purple Halobacterium species owe their color to bacteriorhodopsin, a light-sensitive protein which provides chemical energy for the...
27 KB (2,462 words) - 07:39, 7 November 2024
utilizing light energy. H. salinarum expresses the membrane protein bacteriorhodopsin, which acts as a light-driven proton pump. It consists of two parts:...
25 KB (2,487 words) - 18:36, 23 December 2024
Haloarchaea. Many Haloarchaea contain the retinal derivative protein bacteriorhodopsin in their cell membrane, which carries out photon-driven proton pumping...
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dysregulative activation, rod outer segment instability and arrestin binding. Bacteriorhodopsin, used in some halobacteria as a light-driven proton pump. Hofmann...
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across a biological membrane (e.g. in the case of the proton pump bacteriorhodopsin) or via excitation and transfer of electrons released by photolysis...
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chlorophyll – carotenoids – xanthophyll – cytochrome – phycobilin – bacteriorhodopsin – hemoglobin – myoglobin – absorption spectrum – action spectrum –...
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structure is accurately known. Its properties are similar to those of bacteriorhodopsin, and these two light-driven ion pumps transport cations and anions...
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ponds that are connected to each other and increase in salinity. Bacteriorhodopsin, a membrane protein that uses energy from light to drive the hydrogen-ion...
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for the proton pumping reaction may come from light (light energy; bacteriorhodopsins), electron transfer (electrical energy; electron transport complexes...
13 KB (1,530 words) - 04:23, 21 December 2024
proton-motive force is generated from rhodopsin-like proteins, primarily bacteriorhodopsin and proteorhodopsin, acting as proton pumps along a cellular membrane...
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Henderson produced the first three-dimensional, high resolution image of bacteriorhodopsin using cryogenic electron microscopy (cryo-EM). Since then, cryo-EM...
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thermal and light-induced denaturation of the light-driven proton pump Bacteriorhodopsin from the biomembranes of halobacteria. T. Tsuchiya, S. Saito (1984)...
12 KB (1,162 words) - 12:15, 21 July 2024