The rhodopsin-like pigments of halobacteria: light-energy and signal transducers in an archaebacterium.
Three similar, small retinylidene proteins, which resemble the visual pigments of animals, are found in halobacteria:  two functions as light-driven ion pumps; the third is the receptor for phototaxis and allows color discrimination.
Stoeckenius
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Department of Biochemistry and Biophysics, University of California, San Francisco 94143, USA.
D001436:Bacteriorhodopsins / Q000378:metabolism*; D019617:Halobacterium salinarum / Q000166:cytology* / Q000378:metabolism / Q000528:radiation effects; D025602:Halorhodopsins; D007473:Ion Channels; D008027:Light; D009997:Osmotic Pressure; D010788:Photosynthesis / Q000502:physiology*; D017494:Proton Pumps / Q000502:physiology; D018717:Purple Membrane / Q000502:physiology; D012243:Rhodopsin / Q000378:metabolism*; D012965:Sodium Chloride / Q000378:metabolism*
D025602:Halorhodopsins; D007473:Ion Channels; D017494:Proton Pumps; D012965:Sodium Chloride; D001436:Bacteriorhodopsins; D012243:Rhodopsin