Bacteriorhodopsin: a light-driven proton pump in Halobacterium Halobium
نویسندگان
چکیده
منابع مشابه
Bacteriorhodopsin induces a light-scattering change in Halobacterium halobium
When suspensions of Halobacterium halobium are exposed to bright light, the light-scattering properties of the bacteria change. This light-scattering response can produce a transmission decrease of about 1% throughout the red and near-infrared region. The action spectrum for the light-scattering response appropriately matches the absorption spectrum of bacteriorhodopsin. The response is elimina...
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Ffulohucreriuttt hulohiuttt swims by rotating its pohtrly inserted fiagcllar bundle. The cells arc attracted by green-to-orange light which they can use for photophosphorylation but Ret damaging blue or ultraviolet light. It is petterally believed that this kind of ‘colour vision’ is achieved by the combined action of two photoreceptor proteins. sensory rhodopsins-I and -II, that switch in the ...
متن کاملLight energy conversion in Halobacterium halobium.
INTRODUCTION .............................................................. 682 PURPLE MEMBRANE ....................................................... 683 BACTEBRIORHODOPSIN: A LIGHT-DRIVEN PUMP FOR PROTONS ..... ..... 686 SECONDARY GRADIENTS: TRANSMEMBRANE MOVEMENTS OF Na+, K', AND Cl................................................................... 689 AMINO ACID TRANSPORT ............... ....
متن کاملInduces a Light-scati'ering Change in Halobacterium Halobium
When suspensions of Halobacterium halobium are exposed to bright light, the light-scattering properties of the bacteria change. This light-scattering response can produce a transmission decrease of about 1% throughout the red and nearinfrared region. The action spectrum for the light-scattering response appropriately matches the absorption spectrum of bacteriorhodopsin. The response is e l i m ...
متن کاملA natural light-driven inward proton pump
Light-driven outward H+ pumps are widely distributed in nature, converting sunlight energy into proton motive force. Here we report the characterization of an oppositely directed H+ pump with a similar architecture to outward pumps. A deep-ocean marine bacterium, Parvularcula oceani, contains three rhodopsins, one of which functions as a light-driven inward H+ pump when expressed in Escherichia...
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ژورنال
عنوان ژورنال: Biophysical Journal
سال: 1975
ISSN: 0006-3495
DOI: 10.1016/s0006-3495(75)85875-9