bacteriorhodopsin


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bacteriorhodopsin

[bak‚tir·ē·ō·rō′däp·sən]
(biochemistry)
A purple substance in the cell membranes of halobacteria (found in extremely saline environments) during conditions of low oxygen, and consisting of the protein bacteriopsin and retinal, the same carotenoid found in the visual pigments of animals; in response to light, the purple membrane pumps protons out of the cell, providing the energy gradient for synthesis of adeniosine triphosphate.
References in periodicals archive ?
Bacteriorhodopsin is found in the intensely purple cell membrane of a bacterium called Halobacterium salinarium, which grows in salt marshes.
Nonetheless, a primary example of a natural biomolecule exhibiting phase conjugation, even using low light intensities, is bacteriorhodopsin (Werner, 1990).
Halotolerance refers to some native adaptations including a highly saline cytoplasm, specialized salt-requiring proteins, and the unique light-driven proton as well as chloride pumps bacteriorhodopsin and halorhodopsin (4).
The lipidic cubic phase method was developed by Rosenbusch and Landau, (125) and was used to crystalize bacteriorhodopsin.
One bit of data could be stored by a single molecule of GFP rather than by macroscopic dots of bacteriorhodopsin, another light-responsive protein with data storage potential (SN: 3/8/97, p.
Included in this group might be storage in protein bacteriorhodopsin, the living scum (Halobacterium halobium) found off San Francisco Bay, and multiwavelength storage using strands of human DNA molecules.
The protein, called bacteriorhodopsin, converts light energy into electric energy quickly and efficiently.