Biological Assembly 1  

 3D View: Structure | Electron Density

Global Symmetry: Cyclic - C2  (3D View)
Global Stoichiometry: Homo 2-mer - A2 

Biological assembly 1 assigned by authors and generated by PISA (software)

Macromolecule Content

• Total Structure Weight: 71.51 kDa 
• Atom Count: 4442 
• Residue Count: 559 
• Unique protein chains: 1

4GPO

Oligomeic Turkey Beta1-Adrenergic G Protein-Coupled Receptor

• DOI: 10.2210/pdb4GPO/pdb

• Classification: RECEPTOR
• Organism(s): Meleagris gallopavo
• Expression System: Trichoplusia ni
• Mutation(s): No 


• Deposited: 2012-08-21 Released: 2013-02-27 
• Deposition Author(s): Huang, J.J., Chen, S., Zhang, J.J., Huang, X.Y.

---

Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 3.50 Å
• R-Value Free: 0.355 
• R-Value Work: 0.310 
• R-Value Observed: 0.312 

Re-refinement Note

A newer entry is available that reflects an alternative modeling of the original data: 5F8U

Literature

Crystal structure of oligomeric beta-1-adrenergic G protein-coupled receptors in ligand-free basal state.

Huang, J., Chen, S., Zhang, J.J., Huang, X.Y.

(2013) Nat Struct Mol Biol 20: 419-425

• PubMed: 23435379 
• DOI: 10.1038/nsmb.2504
• Primary Citation of Related Structures:  
  4GPO


• PubMed Abstract: 
  

G protein-coupled receptors (GPCRs) mediate transmembrane signaling. Before ligand binding, GPCRs exist in a basal state. Crystal structures of several GPCRs bound with antagonists or agonists have been solved. However, the crystal structure of the ligand-free basal state of a GPCR, the starting point of GPCR activation and function, had not yet been determined. Here we report the X-ray crystal structure of the ligand-free basal state of a GPCR in a lipid membrane-like environment. Oligomeric turkey β1-adrenergic receptors display two dimer interfaces. One interface involves the transmembrane domain (TM) 1, TM2, the C-terminal H8 and extracellular loop 1. The other interface engages residues from TM4, TM5, intracellular loop 2 and extracellular loop 2. Structural comparisons show that this ligand-free state is in an inactive conformation. This provides the structural basis of GPCR dimerization and oligomerization.

---

Organizational Affiliation: 

Department of Physiology and Biophysics, Cornell University Weill Medical College, New York, New York, USA.

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Beta-1 adrenergic receptor	A, B	313	Meleagris gallopavo	Mutation(s): 0  Gene Names: ADRB1
Membrane protein Mpstruc	Group:  TRANSMEMBRANE PROTEINS: ALPHA-HELICAL		Sub Group:  G Protein-Coupled Receptors (GPCRs): Class A	Protein:  β1 adrenergic receptor oligomer, basal state
Find proteins for P07700 (Meleagris gallopavo) Explore P07700  Go to UniProtKB:  P07700

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 3.50 Å
• R-Value Free: 0.355 
• R-Value Work: 0.310 
• R-Value Observed: 0.312 
• Space Group: C 1 2 1

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 229.66	α = 90
b = 79.59	β = 101.83
c = 69.04	γ = 90

Software Package:

Software Name	Purpose
HKL-2000	data collection
PHASER	phasing
PHENIX	refinement
XDS	data reduction
XSCALE	data scaling

Structure Validation

Entry History 

Deposition Data

• Deposited Date: 2012-08-21 
• Released Date: 2013-02-27 
Deposition Author(s): Huang, J.J., Chen, S., Zhang, J.J., Huang, X.Y.

Revision History 

• Version 1.0: 2013-02-27
  Type: Initial release
  
• Version 1.1: 2013-04-24
  Changes: Refinement description
• Version 1.2: 2013-06-19
  Changes: Database references