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Bacteriorhodopsin

bacteriorhodopsin

A Dictionary of Biology | 2004 | Copyright

bacteriorhodopsin A membrane-bound protein manufactured by the halophilic (salt-resistant) archaebacterium Halobacterium salinarum that exploits light energy to make ATP without the involvement of chlorophyll-like pigments. When activated by light, it pumps protons out of the cell; this creates a concentration gradient, which enables ATP to be synthesized. Bacteriorhodopsin is composed of seven α-helix segments, which span the membrane and are joined together by short amino-acid chains. It contains the prosthetic group retinal, which is also found in the pigment rhodopsin in the rod cells of vertebrates.
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bacteriorhodopsin

A Dictionary of Plant Sciences | 1998 | | Copyright

bacteriorhodopsin A protein pigment found in certain species of bacteria of the genus Halobacterium. Bacteriorhodopsin is responsible for a unique method of harnessing the energy of sunlight for use by the bacteria.
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MICHAEL ALLABY. "bacteriorhodopsin." A Dictionary of Plant Sciences. 1998. Encyclopedia.com. 31 May. 2012 <http://www.encyclopedia.com>.

MICHAEL ALLABY. "bacteriorhodopsin." A Dictionary of Plant Sciences. 1998. Encyclopedia.com. (May 31, 2012). http://www.encyclopedia.com/doc/1O7-bacteriorhodopsin.html

MICHAEL ALLABY. "bacteriorhodopsin." A Dictionary of Plant Sciences. 1998. Retrieved May 31, 2012 from Encyclopedia.com: http://www.encyclopedia.com/doc/1O7-bacteriorhodopsin.html

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