4LDL

Structure of beta2 adrenoceptor bound to hydroxybenzylisoproterenol and an engineered nanobody


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.10 Å
  • R-Value Free: 0.254 
  • R-Value Work: 0.229 
  • R-Value Observed: 0.230 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history


Literature

Adrenaline-activated structure of beta 2-adrenoceptor stabilized by an engineered nanobody.

Ring, A.M.Manglik, A.Kruse, A.C.Enos, M.D.Weis, W.I.Garcia, K.C.Kobilka, B.K.

(2013) Nature 502: 575-579

  • DOI: 10.1038/nature12572
  • Primary Citation of Related Structures:  
    4LDE, 4LDL, 4LDO

  • PubMed Abstract: 
  • G-protein-coupled receptors (GPCRs) are integral membrane proteins that have an essential role in human physiology, yet the molecular processes through which they bind to their endogenous agonists and activate effector proteins remain poorly understo ...

    G-protein-coupled receptors (GPCRs) are integral membrane proteins that have an essential role in human physiology, yet the molecular processes through which they bind to their endogenous agonists and activate effector proteins remain poorly understood. So far, it has not been possible to capture an active-state GPCR bound to its native neurotransmitter. Crystal structures of agonist-bound GPCRs have relied on the use of either exceptionally high-affinity agonists or receptor stabilization by mutagenesis. Many natural agonists such as adrenaline, which activates the β2-adrenoceptor (β2AR), bind with relatively low affinity, and they are often chemically unstable. Using directed evolution, we engineered a high-affinity camelid antibody fragment that stabilizes the active state of the β2AR, and used this to obtain crystal structures of the activated receptor bound to multiple ligands. Here we present structures of the active-state human β2AR bound to three chemically distinct agonists: the ultrahigh-affinity agonist BI167107, the high-affinity catecholamine agonist hydroxybenzyl isoproterenol, and the low-affinity endogenous agonist adrenaline. The crystal structures reveal a highly conserved overall ligand recognition and activation mode despite diverse ligand chemical structures and affinities that range from 100 nM to ∼80 pM. Overall, the adrenaline-bound receptor structure is similar to the others, but it has substantial rearrangements in extracellular loop three and the extracellular tip of transmembrane helix 6. These structures also reveal a water-mediated hydrogen bond between two conserved tyrosines, which appears to stabilize the active state of the β2AR and related GPCRs.


    Organizational Affiliation

    Department of Molecular and Cellular Physiology, Stanford University, Stanford, CA 94305, USA.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Lysozyme, Beta-2 adrenergic receptorA469Escherichia virus T4Homo sapiensMutation(s): 6 
Gene Names: ADRB2
EC: 3.2.1.17
Find proteins for P07550 (Homo sapiens)
Explore P07550 
Go to UniProtKB:  P07550
NIH Common Fund Data Resources
PHAROS  P07550
Find proteins for P00720 (Enterobacteria phage T4)
Explore P00720 
Go to UniProtKB:  P00720
Protein Feature View
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  • Reference Sequence
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
Camelid Antibody FragmentB120Lama glamaMutation(s): 0 
Protein Feature View
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  • Reference Sequence
Small Molecules
Ligands 3 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
XQC
Query on XQC

Download CCD File 
A
4-[(1R)-1-hydroxy-2-{[1-(4-hydroxyphenyl)-2-methylpropan-2-yl]amino}ethyl]benzene-1,2-diol
C18 H23 N O4
CTXHFGIUMIBAFO-KRWDZBQOSA-N
 Ligand Interaction
1WV
Query on 1WV

Download CCD File 
A
(2S)-2,3-dihydroxypropyl (7Z)-tetradec-7-enoate
C17 H32 O4
LVBAGTJIDOCNIJ-INIZCTEOSA-N
 Ligand Interaction
NA
Query on NA

Download CCD File 
A
SODIUM ION
Na
FKNQFGJONOIPTF-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.10 Å
  • R-Value Free: 0.254 
  • R-Value Work: 0.229 
  • R-Value Observed: 0.230 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 49.67α = 90
b = 66.48β = 90
c = 303.1γ = 90
Software Package:
Software NamePurpose
Blu-Icedata collection
PHASERphasing
PHENIXrefinement
HKL-2000data reduction

Structure Validation

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Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2013-09-25
    Type: Initial release
  • Version 1.1: 2013-10-30
    Changes: Database references
  • Version 1.2: 2017-08-09
    Changes: Refinement description, Source and taxonomy