A bacteriorhodopsin and halorhodopsin do not spend

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Unformatted text preview: aea uses light energy to synthesize ATP to survive un3l oxygen level rise again. 13 14 ATP synthesis through ATP synthase Photoisomerization of Bacteriorhodopsin 3) When light is absorbed the chromophore is isomerized from trans- to cis- reCnal, a change that accompanies the transfer of the Schiff base proton to Aspartate 85 residue located nearby on the external side, and the subsequent release of the proton into the external media. 4) The light energy is further used to re- isomerize the chromophore back to trans- reCnal, which accompanies the recovery of the Schiff base proton from Aspartate 96 residue, which is located to the cytoplasmic side from the Schiff base and is protonated before the absorpCon...
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