Abstract:While structural biology aims at explaining the biological function of membrane proteins with their structure, it is unclear how these proteins are modulated by the complex lipid composition of membranes. Here, we address this question by mapping the conformational distribution of the bacterial oligopeptide transporter DtpA using single-molecule fluorescence spectroscopy. We show that DtpA populates ensembles of conformers that respond sensitively to the environment. Detergents trap the transporter in an inwar… Show more
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