V they will grow at salt concentracons approaching

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Unformatted text preview: from carotenoids. 3 4 Haloarchaea Halobacterium salinarum A marine saltern in Puerto Rico 5 v༇  Extreme Halophiles love salt. The name comes from the Greek for “salt- loving”. v༇  They will grow at salt concentraCons approaching saturaCon (about 32%) (Sea water, by comparison, is only about 3.0 % salt). v༇  They only grow in high salinity habitats, such as marine salterns, and salt lakes, such as Dead Sea. v༇  Haloarchaea oSen have red- to- yellow pigmenta3on from carotenoids. 6 1 14/04/13 Some properties of light-driven ion pumps Bacteriorhodopsin Halorhodopsin Discovered in 1973 Discovered in 1980 A single- site muta3on in bacteriorhodopsin converts it from a proton pump to a Cl– pump. Share sequence iden33es (25–35%) with bacteriorhodopsins Re3nal- containing protein Integral membrane proteins with seven alpha helices across the cytoplasmic membrane, surrounding the reCnal-...
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This document was uploaded on 02/27/2014 for the course BIOC 2201 at University of New South Wales.

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