5uja | pdb_00005uja

Cryo-EM structure of bovine multidrug resistance protein 1 (MRP1) bound to leukotriene C4

Loading... Status: waiting for Mol* initialization Structural highlights 5uja is a 1 chain structure with sequence from Bovin. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance. Ligands: LTX NonStd Res: UNK Related: 5uj9 Gene: ABCC1, MRP1 (BOVIN) Resources: FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT Publication Abstract from PubMed The multidrug resistance protein MRP1 is an ATP-binding cassette (ABC) transporter that confers resistance to many anticancer drugs and plays a role in the disposition and efficacy of several opiates, antidepressants, statins, and antibiotics. In addition, MRP1 regulates redox homeostasis, inflammation, and hormone secretion. Using electron cryomicroscopy, we determined the molecular structures of bovine MRP1 in two conformations: an apo form at 3.5 A without any added substrate and a complex form at 3.3 A with one of its physiological substrates, leukotriene C4. These structures show that by forming a single bipartite binding site, MRP1 can recognize a spectrum of substrates with different chemical structures. We also observed large conformational changes induced by leukotriene C4, explaining how substrate binding primes the transporter for ATP hydrolysis. Structural comparison of MRP1 and P-glycoprotein advances our understanding of the common and unique properties of these two important molecules in multidrug resistance to chemotherapy. Structural Basis of Substrate Recognition by the Multidrug Resistance Protein MRP1.,Johnson ZL, Chen J Cell. 2017 Mar 9;168(6):1075-1085.e9. doi: 10.1016/j.cell.2017.01.041. Epub 2017 , Feb 23. PMID:28238471 From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

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