Requirements for Osmosensing and Osmotic Activation of Transporter ProP from Escherichia coli

Transporter ProP of Escherichia coli, a solute-H+ symporter, can sense and respond to osmotic upshifts imposed on cells, on membrane vesicles, or on proteoliposomes that incorporate purified ProP-(His)6. In this study, proline uptake catalyzed by ProP was used as a measure of its osmotic activation,...

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