3 years ago

ATP-binding cassette exporters: structure and mechanism with a focus on P-glycoprotein and MRP1.

Altenberg, Arana
The majority of proteins that belong to the ATP-binding cassette (ABC) superfamily are transporters that mediate the efflux of substrates from cells. These exporters include multidrug resistance proteins of the ABCB and ABCC subfamilies, such as P-glycoprotein (Pgp) and MRP1, respectively. These proteins are not only involved in the resistance of cancer to cytotoxic agents, but also in the protection from endo and xenobiotics, and the determination of drug pharmacokinetics, as well as in the pathophysiology of a variety of disorders. Here, we present a review of the information available on ABC exporters, with a focus on Pgp, MRP1 and related proteins. We describe tissue localization and function of these transporters in health and disease, and discuss the mechanisms of substrate transport. We also correlate recent structural information with the function of the exporters, and discuss details of their molecular mechanism with a focus on the nucleotide-binding domains.

Publisher URL: http://doi.org/10.2174/0929867324666171012105143

DOI: 10.2174/0929867324666171012105143

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