Abstract
The angiotensin II receptors AT1 R and AT2 R serve as key components of the renin-angiotensin-aldosterone system. AT1 R has a central role in the regulation of blood pressure, but the function of AT2 R is unclear and it has a variety of reported effects. To identify the mechanisms that underlie the differences in function and ligand selectivity between these receptors, here we report crystal structures of human AT2 R bound to an AT2 R-selective ligand and to an AT 1 R/AT2 R dual ligand, capturing the receptor in an active-like conformation. Unexpectedly, helix VIII was found in a non-canonical position, stabilizing the active-like state, but at the same time preventing the recruitment of G proteins or β-arrestins, in agreement with the lack of signalling responses in standard cellular assays. Structure-activity relationship, docking and mutagenesis studies revealed the crucial interactions for ligand binding and selectivity. Our results thus provide insights into the structural basis of the distinct functions of the angiotensin receptors, and may guide the design of new selective ligands.
Original language | English (US) |
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Pages (from-to) | 327-332 |
Number of pages | 6 |
Journal | Nature |
Volume | 544 |
Issue number | 7650 |
DOIs | |
State | Published - Apr 20 2017 |
ASJC Scopus subject areas
- General
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Dive into the research topics of 'Structural basis for selectivity and diversity in angiotensin II receptors'. Together they form a unique fingerprint.Datasets
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Synchrotron structure of human angiotensin II type 2 receptor in complex with compound 2 (N-[(furan-2-yl)methyl]-N-(4-oxo-2-propyl-3-{[2'-(2H-tetrazol-5-yl)[1,1'- biphenyl]-4-yl]methyl}-3,4-dihydroquinazolin-6-yl)benzamide)
Zhang, H. (Contributor), Han, G. W. (Contributor), Batyuk, A. (Contributor), Ishchenko, A. (Contributor), White, K. L. (Contributor), Patel, N. (Contributor), Sadybekov, A. (Contributor), Zamlynny, B. (Contributor), Rudd, M. T. (Contributor), Hollenstein, K. (Contributor), Tolstikova, A. (Contributor), White, T. A. (Contributor), Hunter, M. S. (Contributor), Weierstall, U. (Contributor), Liu, W. (Contributor), Babaoglu, K. (Contributor), Moore, E. L. (Contributor), Katz, R. D. (Contributor), Shipman, J. M. (Contributor), Garcia-Calvo, M. (Contributor), Sharma, S. (Contributor), Sheth, P. (Contributor), Soisson, S. M. (Contributor), Stevens, R. C. (Contributor), Katritch, V. (Contributor) & Cherezov, V. (Contributor), Protein Data Bank (PDB), Apr 5 2017
DOI: 10.2210/pdb5UNH/pdb, https://www.wwpdb.org/pdb?id=pdb_00005unh
Dataset
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XFEL structure of human angiotensin II type 2 receptor (Monoclinic form) in complex with compound 1 (N-benzyl-N-(2-ethyl-4-oxo-3-{[2'-(2H-tetrazol-5-yl)[1,1'-biphenyl]-4-yl])
Zhang, H. (Contributor), Han, G. W. (Contributor), Batyuk, A. (Contributor), Ishchenko, A. (Contributor), White, K. L. (Contributor), Patel, N. (Contributor), Sadybekov, A. (Contributor), Zamlynny, B. (Contributor), Rudd, M. T. (Contributor), Hollenstein, K. (Contributor), Tolstikova, A. (Contributor), White, T. A. (Contributor), Hunter, M. S. (Contributor), Weierstall, U. (Contributor), Liu, W. (Contributor), Babaoglu, K. (Contributor), Moore, E. L. (Contributor), Katz, R. D. (Contributor), Shipman, J. M. (Contributor), Garcia-Calvo, M. (Contributor), Sharma, S. (Contributor), Sheth, P. (Contributor), Soisson, S. M. (Contributor), Stevens, R. C. (Contributor), Katritch, V. (Contributor) & Cherezov, V. (Contributor), Protein Data Bank (PDB), Apr 5 2017
DOI: 10.2210/pdb5UNF/pdb, https://www.wwpdb.org/pdb?id=pdb_00005unf
Dataset
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XFEL structure of human angiotensin II type 2 receptor (Orthorhombic form) in complex with compound 1 (N-benzyl-N-(2-ethyl-4-oxo-3-{[2'-(2H-tetrazol-5-yl)[1,1'-biphenyl]-4-yl] methyl}-3,4-dihydroquinazolin-6-yl)thiophene-2-carboxamide)
Zhang, H. (Contributor), Han, G. W. (Contributor), Batyuk, A. (Contributor), Ishchenko, A. (Contributor), White, K. L. (Contributor), Patel, N. (Contributor), Sadybekov, A. (Contributor), Zamlynny, B. (Contributor), Rudd, M. T. (Contributor), Hollenstein, K. (Contributor), Tolstikova, A. (Contributor), White, T. A. (Contributor), Hunter, M. S. (Contributor), Weierstall, U. (Contributor), Liu, W. (Contributor), Babaoglu, K. (Contributor), Moore, E. L. (Contributor), Katz, R. D. (Contributor), Shipman, J. M. (Contributor), Garcia-Calvo, M. (Contributor), Sharma, S. (Contributor), Sheth, P. (Contributor), Soisson, S. M. (Contributor), Stevens, R. C. (Contributor), Katritch, V. (Contributor) & Cherezov, V. (Contributor), Protein Data Bank (PDB), Apr 5 2017
DOI: 10.2210/pdb5UNG/pdb, https://www.wwpdb.org/pdb?id=pdb_00005ung
Dataset