Download MendeleyStructure-based mechanism of cysteinyl leukotriene receptor inhibition by antiasthmatic drugs.
Luginina, A., Gusach, A., Marin, E., Mishin, A., Brouillette, R., Popov, P., Shiriaeva, A., Besserer-Offroy, E., Longpre, J.M., Lyapina, E., Ishchenko, A., Patel, N., Polovinkin, V., Safronova, N., Bogorodskiy, A., Edelweiss, E., Hu, H., Weierstall, U., Liu, W., Batyuk, A., Gordeliy, V., Han, G.W., Sarret, P., Katritch, V., Borshchevskiy, V., Cherezov, V.(2019) Sci Adv 5: eaax2518-eaax2518
- PubMed: 31633023
- DOI: https://doi.org/10.1126/sciadv.aax2518
- Primary Citation of Related Structures:
6RZ4, 6RZ5 - PubMed Abstract:
The G protein-coupled cysteinyl leukotriene receptor CysLT 1 R mediates inflammatory processes and plays a major role in numerous disorders, including asthma, allergic rhinitis, cardiovascular disease, and cancer. Selective CysLT 1 R antagonists are widely prescribed as antiasthmatic drugs; however, these drugs demonstrate low effectiveness in some patients and exhibit a variety of side effects. To gain deeper understanding into the functional mechanisms of CysLTRs, we determined the crystal structures of CysLT 1 R bound to two chemically distinct antagonists, zafirlukast and pranlukast. The structures reveal unique ligand-binding modes and signaling mechanisms, including lateral ligand access to the orthosteric pocket between transmembrane helices TM4 and TM5, an atypical pattern of microswitches, and a distinct four-residue-coordinated sodium site. These results provide important insights and structural templates for rational discovery of safer and more effective drugs.
Organizational Affiliation:
Research Center for Molecular Mechanisms of Aging and Age-Related Diseases, Moscow Institute of Physics and Technology, Dolgoprudny 141701, Russia.
