4ZUD

Crystal Structure of Human Angiotensin Receptor in Complex with Inverse Agonist Olmesartan at 2.8A resolution.


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.8 Å
  • R-Value Free: 0.234 
  • R-Value Work: 0.194 

wwPDB Validation 3D Report Full Report


This is version 1.3 of the entry. See complete history

Literature

Structural Basis for Ligand Recognition and Functional Selectivity at Angiotensin Receptor.

Zhang, H.Unal, H.Desnoyer, R.Han, G.W.Patel, N.Katritch, V.Karnik, S.S.Cherezov, V.Stevens, R.C.

(2015) J.Biol.Chem. 290: 29127-29139

  • DOI: 10.1074/jbc.M115.689000

  • PubMed Abstract: 
  • Angiotensin II type 1 receptor (AT1R) is the primary blood pressure regulator. AT1R blockers (ARBs) have been widely used in clinical settings as anti-hypertensive drugs and share a similar chemical scaffold, although even minor variations can lead t ...

    Angiotensin II type 1 receptor (AT1R) is the primary blood pressure regulator. AT1R blockers (ARBs) have been widely used in clinical settings as anti-hypertensive drugs and share a similar chemical scaffold, although even minor variations can lead to distinct therapeutic efficacies toward cardiovascular etiologies. The structural basis for AT1R modulation by different peptide and non-peptide ligands has remained elusive. Here, we report the crystal structure of the human AT1R in complex with an inverse agonist olmesartan (Benicar(TM)), a highly potent anti-hypertensive drug. Olmesartan is anchored to the receptor primarily by the residues Tyr-35(1.39), Trp-84(2.60), and Arg-167(ECL2), similar to the antagonist ZD7155, corroborating a common binding mode of different ARBs. Using docking simulations and site-directed mutagenesis, we identified specific interactions between AT1R and different ARBs, including olmesartan derivatives with inverse agonist, neutral antagonist, or agonist activities. We further observed that the mutation N111(3.35)A in the putative sodium-binding site affects binding of the endogenous peptide agonist angiotensin II but not the β-arrestin-biased peptide TRV120027.


    Organizational Affiliation

    From the Departments of Biological Sciences and Chemistry, Bridge Institute, University of Southern California, Los Angeles, California 90089 and.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Chimera protein of Soluble cytochrome b562 and Type-1 angiotensin II receptor
A
410Escherichia coliHomo sapiens
This entity is chimeric
Mutation(s): 3 
Gene Names: cybC, AGTR1 (AGTR1A, AGTR1B, AT2R1, AT2R1B)
Membrane protein
mpstruct
Group: 
TRANSMEMBRANE PROTEINS: ALPHA-HELICAL
Sub Group: 
G Protein-Coupled Receptors (GPCRs)
Protein: 
Angiotensin type I receptor
Find proteins for P0ABE7 (Escherichia coli)
Go to UniProtKB:  P0ABE7
Find proteins for P30556 (Homo sapiens)
Go to Gene View: AGTR1
Go to UniProtKB:  P30556
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
OLM
Query on OLM

Download SDF File 
Download CCD File 
A
Olmesartan
C24 H26 N6 O3
VTRAEEWXHOVJFV-UHFFFAOYSA-N
 Ligand Interaction
External Ligand Annotations 
IDBinding Affinity (Sequence Identity %)
OLMIC50: 7.7 - 8.1 nM (92) BINDINGDB
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.8 Å
  • R-Value Free: 0.234 
  • R-Value Work: 0.194 
  • Space Group: P 32
Unit Cell:
Length (Å)Angle (°)
a = 41.200α = 90.00
b = 41.200β = 90.00
c = 251.160γ = 120.00
Software Package:
Software NamePurpose
XDSdata reduction
XSCALEdata scaling
PHASERphasing
REFMACrefinement

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
National Institutes of Health/National Institute of General Medical SciencesUnited StatesU54 GM094618

Revision History 

  • Version 1.0: 2015-10-07
    Type: Initial release
  • Version 1.1: 2015-10-14
    Type: Database references
  • Version 1.2: 2015-12-16
    Type: Database references
  • Version 1.3: 2017-09-20
    Type: Author supporting evidence, Database references, Derived calculations