5UNG

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)

• PDB DOI:  https://doi.org/10.2210/pdb5UNG/pdb

• Classification: SIGNALING PROTEIN
• Organism(s): Escherichia coli, Homo sapiens
• Expression System: Spodoptera frugiperda
• Mutation(s): Yes 
• Membrane Protein: Yes  OPMPDBTMMemProtMDmpstruc


• Deposited: 2017-01-30 Released: 2017-04-05 
• Deposition Author(s): Zhang, H., Han, G.W., Batyuk, A., Ishchenko, A., White, K.L., Patel, N., Sadybekov, A., Zamlynny, B., Rudd, M.T., Hollenstein, K., Tolstikova, A., White, T.A., Hunter, M.S., Weierstall, U., Liu, W., Babaoglu, K., Moore, E.L., Katz, R.D., Shipman, J.M., Garcia-Calvo, M., Sharma, S., Sheth, P., Soisson, S.M., Stevens, R.C., Katritch, V., Cherezov, V.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.80 Å
• R-Value Free: 0.262 
• R-Value Work: 0.241 
• R-Value Observed: 0.242 

Literature

Structural basis for selectivity and diversity in angiotensin II receptors.

Zhang, H., Han, G.W., Batyuk, A., Ishchenko, A., White, K.L., Patel, N., Sadybekov, A., Zamlynny, B., Rudd, M.T., Hollenstein, K., Tolstikova, A., White, T.A., Hunter, M.S., Weierstall, U., Liu, W., Babaoglu, K., Moore, E.L., Katz, R.D., Shipman, J.M., Garcia-Calvo, M., Sharma, S., Sheth, P., Soisson, S.M., Stevens, R.C., Katritch, V., Cherezov, V.

(2017) Nature 544: 327-332

• PubMed: 28379944 
• DOI: https://doi.org/10.1038/nature22035
• Primary Citation of Related Structures:  
  5UNF, 5UNG, 5UNH


• PubMed Abstract: 
  

The angiotensin II receptors AT ₁ R and AT ₂ R serve as key components of the renin-angiotensin-aldosterone system. AT ₁ R has a central role in the regulation of blood pressure, but the function of AT ₂ 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 AT ₂ R bound to an AT ₂ R-selective ligand and to an AT ₁ R/AT ₂ 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.

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Organizational Affiliation: 

Department of Chemistry, Bridge Institute, University of Southern California, Los Angeles, California 90089, USA.

Biological Assembly 1  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Monomer - A1 

Biological assembly 1 generated by PISA (software)

Macromolecule Content

• Total Structure Weight: 47.77 kDa 
• Atom Count: 3,266 
• Modelled Residue Count: 410 
• Deposited Residue Count: 411 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Chimera protein of Type-2 angiotensin II receptor and Soluble cytochrome b562	A [auth B]	411	Escherichia coli, Homo sapiens This entity is chimeric	Mutation(s): 3  Gene Names: cybC, AGTR2 Membrane Entity: Yes
UniProt & NIH Common Fund Data Resources
Find proteins for P0ABE7 (Escherichia coli) Explore P0ABE7  Go to UniProtKB:  P0ABE7
Find proteins for P50052 (Homo sapiens) Explore P50052  Go to UniProtKB:  P50052
PHAROS:  P50052
UniProt Groups	P0ABE7P50052

Small Molecules

Ligands 3 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
8ES	B	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 C36 H29 N7 O2 S KDPHUUTUDFDLBT-UHFFFAOYSA-N
OLC	C [auth B]	(2R)-2,3-dihydroxypropyl (9Z)-octadec-9-enoate C21 H40 O4 RZRNAYUHWVFMIP-GDCKJWNLSA-N
OLA	D [auth B]	OLEIC ACID C18 H34 O2 ZQPPMHVWECSIRJ-KTKRTIGZSA-N

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.80 Å
• R-Value Free: 0.262 
• R-Value Work: 0.241 
• R-Value Observed: 0.242 
• Space Group: P 2₁ 2 2₁

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 70.26	α = 90
b = 78.79	β = 90
c = 93.41	γ = 90

Software Package:

Software Name	Purpose
BUSTER	refinement
CrystFEL	data reduction
CrystFEL	data scaling
PHASER	phasing

Structure Validation

Entry History 

Deposition Data

• Released Date: 2017-04-05 
Deposition Author(s): Zhang, H., Han, G.W., Batyuk, A., Ishchenko, A., White, K.L., Patel, N., Sadybekov, A., Zamlynny, B., Rudd, M.T., Hollenstein, K., Tolstikova, A., White, T.A., Hunter, M.S., Weierstall, U., Liu, W., Babaoglu, K., Moore, E.L., Katz, R.D., Shipman, J.M., Garcia-Calvo, M., Sharma, S., Sheth, P., Soisson, S.M., Stevens, R.C., Katritch, V., Cherezov, V.

Revision History  

• Version 1.0: 2017-04-05
  Type: Initial release
  
• Version 1.1: 2017-05-10
  Changes: Data collection, Database references
• Version 1.2: 2018-11-28
  Changes: Data collection