jojo

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IN order to investigate the action of bacterial membrane protein that is a light-driven proton pump, you purify protein and allow it to self-assemble together with phospholipids into liposomes that also contain an indicator dye,which is blue at high pH,colorless at neutral pH,and red at low pH.You then expose the liposomes , in an aquaeous solution, to sunlight.The interior of the liposomes stay colorless.Assuming that your bacterial protein has not been damaged by its purification and incorporation into liposomes, what it the most likely explanation for this results?