Ch10 - temperature goes down the membrane becomes more...

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Chem 365 Homework solutions 14. Valinomycin is a mobile type ionophore while gramicidin is a channel-forming ionophore. Lowering the temperature drastically influences the rate of transport by valinomycin relative to gramicidin. Explain this observation. Valinomycin has to move back and forth across the membrane. As the
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Unformatted text preview: temperature goes down the membrane becomes more viscous making it more difficult and ultimately impossible for valinomycin to move back and forth. Gramacidin does not have to move across the membrane in order to move ions across and is therefore much less sensitive to the temperature....
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This note was uploaded on 05/07/2011 for the course CHEM 365 taught by Professor Huxford during the Spring '08 term at San Diego State.

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Ch10 - temperature goes down the membrane becomes more...

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