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- W3207564648 abstract "The human peptide transporter hPEPT1 (SLC15A1) is responsible for uptake of dietary di- and tripeptides and a number of drugs from the small intestine by utilizing the proton electrochemical gradient, and hence an important target for peptide-like drug design and drug delivery. hPEPT1 belongs to the ubiquitous major facilitator superfamily that all contain a 12TM core structure, with global conformational changes occurring during the transport cycle. Several bacterial homologues of these transporters have been characterized, providing valuable insight into the transport mechanism of this family. Here we report the overexpression and purification of recombinant hPEPT1 in a detergent-solubilized state. Thermostability profiling of hPEPT1 at different pH values revealed that hPEPT1 is more stable at pH 6 as compared to pH 7 and 8. Micro-scale thermophoresis (MST) confirmed that the purified hPEPT1 was able to bind di- and tripeptides respectively. To assess the in-solution oligomeric state of hPEPT1, negative stain electron microscopy was performed, demonstrating a predominantly monomeric state." @default.
- W3207564648 created "2021-10-25" @default.
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- W3207564648 date "2022-02-01" @default.
- W3207564648 modified "2023-09-25" @default.
- W3207564648 title "Expression, purification and characterization of human proton-coupled oligopeptide transporter 1 hPEPT1" @default.
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- W3207564648 doi "https://doi.org/10.1016/j.pep.2021.105990" @default.
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