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6a. An unknown species has 18 amino acid transporters, each containing 12 membrane-spanning alpha-helices. These amino acid transporters do not have an ATPase domain. It has been observed that they import amino acids into cells much more effectively at pH 8 than at pH 5. (a) What type of transporter are these amino acid transporters? What is the driving force for amino acid import? Are they antiporters or symporters?
6b. Propose another membrane protein which could provide the thermodynamic driving force for amino acids transport AND describe how it functions.
6a. An unknown species has 18 amino acid transporters, each containing 12 membrane-spanning alpha-helices. These amino acid transporters do not have an ATPase domain. It has been observed that they import amino acids into cells much more effectively at pH 8 than at pH 5. (a) What type of transporter are these amino acid transporters? What is the driving force for amino acid import? Are they antiporters or symporters?
6b. Propose another membrane protein which could provide the thermodynamic driving force for amino acids transport AND describe how it functions.
Hubert KochLv2
10 Feb 2018
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