4GBR

N-Terminal T4 Lysozyme Fusion Facilitates Crystallization of a G Protein Coupled Receptor

Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.99 Å
  • R-Value Free: 0.282 
  • R-Value Work: 0.265 
  • R-Value Observed: 0.268 

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Literature

N-terminal t4 lysozyme fusion facilitates crystallization of a g protein coupled receptor.

Zou, Y., Weis, W.I., Kobilka, B.K.

(2012) PLoS One 7: e46039-e46039

  • DOI: 10.1371/journal.pone.0046039
  • Primary Citation of Related Structures:  
    4GBR

  • PubMed Abstract: 

    • A highly crystallizable T4 lysozyme (T4L) was fused to the N-terminus of the β(2) adrenergic receptor (β(2)AR), a G-protein coupled receptor (GPCR) for catecholamines. We demonstrate that the N-terminal fused T4L is sufficiently rigid relative to the receptor to facilitate crystallogenesis without thermostabilizing mutations or the use of a stabilizing antibody, G protein, or protein fused to the 3rd intracellular loop ...

    A highly crystallizable T4 lysozyme (T4L) was fused to the N-terminus of the β(2) adrenergic receptor (β(2)AR), a G-protein coupled receptor (GPCR) for catecholamines. We demonstrate that the N-terminal fused T4L is sufficiently rigid relative to the receptor to facilitate crystallogenesis without thermostabilizing mutations or the use of a stabilizing antibody, G protein, or protein fused to the 3rd intracellular loop. This approach adds to the protein engineering strategies that enable crystallographic studies of GPCRs alone or in complex with a signaling partner.

    Organizational Affiliation: 

    Department of Molecular and Cellular Physiology, Stanford University School of Medicine, Stanford, California, United States of America.



Macromolecules
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Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Beta-2 adrenergic receptorA309Homo sapiensMutation(s): 3 
Gene Names: ADRB2, ADRB2R, B2AR
Membrane Entity: Yes 
UniProt & NIH Common Fund Data Resources
Find proteins for P07550 (Homo sapiens)
Explore P07550 
Go to UniProtKB:  P07550
PHAROS:  P07550
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP07550
Protein Feature View
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  • Reference Sequence
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Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
LysozymeB163Escherichia virus T4Mutation(s): 0 
Gene Names: E
EC: 3.2.1.17
UniProt
Find proteins for P00720 (Enterobacteria phage T4)
Explore P00720 
Go to UniProtKB:  P00720
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP00720
Protein Feature View
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  • Reference Sequence
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
CAU
Query on CAU
Download Ideal Coordinates CCD File 
C [auth A](2S)-1-(9H-Carbazol-4-yloxy)-3-(isopropylamino)propan-2-ol
C18 H22 N2 O2
BQXQGZPYHWWCEB-ZDUSSCGKSA-N		 Ligand Interaction
Binding Affinity Annotations 
IDSourceBinding Affinity
CAU BindingDB:  4GBR Ki: min: 0.03, max: 0.11 (nM) from 2 assay(s)
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.99 Å
  • R-Value Free: 0.282 
  • R-Value Work: 0.265 
  • R-Value Observed: 0.268 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 51.382α = 90
b = 71.376β = 90
c = 161.37γ = 90
Software Package:
Software NamePurpose
APEXdata collection
MOLREPphasing
PHENIXrefinement
HKL-2000data reduction
HKL-2000data scaling

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2012-10-24
    Type: Initial release