5MZP

Crystal structure of stabilized A2A adenosine receptor A2AR-StaR2-bRIL in complex with caffeine at 2.1A resolution


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.10 Å
  • R-Value Free: 0.220 
  • R-Value Work: 0.196 
  • R-Value Observed: 0.197 

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Ligand Structure Quality Assessment 


This is version 1.1 of the entry. See complete history


Literature

Structures of Human A1 and A2A Adenosine Receptors with Xanthines Reveal Determinants of Selectivity.

Cheng, R.K.Y.Segala, E.Robertson, N.Deflorian, F.Dore, A.S.Errey, J.C.Fiez-Vandal, C.Marshall, F.H.Cooke, R.M.

(2017) Structure 25: 1275-1285.e4

  • DOI: 10.1016/j.str.2017.06.012
  • Primary Citation of Related Structures:  
    5N2R, 5N2S, 5MZJ, 5MZP

  • PubMed Abstract: 
  • The adenosine A 1 and A 2A receptors belong to the purinergic family of G protein-coupled receptors, and regulate diverse functions of the cardiovascular, respiratory, renal, inflammation, and CNS. Xanthines such as caffeine and theophylline are weak, non-selective antagonists of adenosine receptors ...

    The adenosine A 1 and A 2A receptors belong to the purinergic family of G protein-coupled receptors, and regulate diverse functions of the cardiovascular, respiratory, renal, inflammation, and CNS. Xanthines such as caffeine and theophylline are weak, non-selective antagonists of adenosine receptors. Here we report the structure of a thermostabilized human A 1 receptor at 3.3 Å resolution with PSB36, an A 1 -selective xanthine-based antagonist. This is compared with structures of the A 2A receptor with PSB36 (2.8 Å resolution), caffeine (2.1 Å), and theophylline (2.0 Å) to highlight features of ligand recognition which are common across xanthines. The structures of A 1 R and A 2A R were analyzed to identify the differences that are important selectivity determinants for xanthine ligands, and the role of T270 7.35 in A 1 R (M270 7.35 in A 2A R) in conferring selectivity was confirmed by mutagenesis. The structural differences confirmed to lead to selectivity can be utilized in the design of new subtype-selective A 1 R or A 2A R antagonists.


    Organizational Affiliation

    Heptares Therapeutics Ltd, Biopark, Broadwater Road, Welwyn Garden City AL7 3AX, UK. Electronic address: rob.cooke@heptares.com.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Adenosine receptor A2a,Soluble cytochrome b562,Adenosine receptor A2aA433Homo sapiensEscherichia coliMutation(s): 10 
Gene Names: ADORA2AADORA2cybC
Membrane Entity: Yes 
UniProt & NIH Common Fund Data Resources
Find proteins for P0ABE7 (Escherichia coli)
Explore P0ABE7 
Go to UniProtKB:  P0ABE7
Find proteins for P29274 (Homo sapiens)
Explore P29274 
Go to UniProtKB:  P29274
PHAROS:  P29274
Protein Feature View
Expand
  • Reference Sequence
Small Molecules
Ligands 6 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
CLR (Subject of Investigation/LOI)
Query on CLR

Download Ideal Coordinates CCD File 
D [auth A], E [auth A], F [auth A], G [auth A]CHOLESTEROL
C27 H46 O
HVYWMOMLDIMFJA-DPAQBDIFSA-N
 Ligand Interaction
OLC (Subject of Investigation/LOI)
Query on OLC

Download Ideal Coordinates CCD File 
AA [auth A], BA [auth A], CA [auth A], DA [auth A], EA [auth A], FA [auth A], Z [auth A](2R)-2,3-dihydroxypropyl (9Z)-octadec-9-enoate
C21 H40 O4
RZRNAYUHWVFMIP-GDCKJWNLSA-N
 Ligand Interaction
OLA (Subject of Investigation/LOI)
Query on OLA

Download Ideal Coordinates CCD File 
H [auth A] , I [auth A] , J [auth A] , K [auth A] , L [auth A] , M [auth A] , N [auth A] , O [auth A] , 
H [auth A],  I [auth A],  J [auth A],  K [auth A],  L [auth A],  M [auth A],  N [auth A],  O [auth A],  P [auth A],  Q [auth A],  R [auth A],  S [auth A],  T [auth A],  U [auth A],  V [auth A],  W [auth A],  X [auth A],  Y [auth A]
OLEIC ACID
C18 H34 O2
ZQPPMHVWECSIRJ-KTKRTIGZSA-N
 Ligand Interaction
CFF (Subject of Investigation/LOI)
Query on CFF

Download Ideal Coordinates CCD File 
C [auth A]CAFFEINE
C8 H10 N4 O2
RYYVLZVUVIJVGH-UHFFFAOYSA-N
 Ligand Interaction
TAR
Query on TAR

Download Ideal Coordinates CCD File 
GA [auth A]D(-)-TARTARIC ACID
C4 H6 O6
FEWJPZIEWOKRBE-LWMBPPNESA-N
 Ligand Interaction
NA
Query on NA

Download Ideal Coordinates CCD File 
B [auth A]SODIUM ION
Na
FKNQFGJONOIPTF-UHFFFAOYSA-N
 Ligand Interaction
Binding Affinity Annotations 
IDSourceBinding Affinity
CFF BindingDB:  5MZP Ki: min: 5011.87, max: 4.80e+4 (nM) from 6 assay(s)
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.10 Å
  • R-Value Free: 0.220 
  • R-Value Work: 0.196 
  • R-Value Observed: 0.197 
  • Space Group: C 2 2 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 39.442α = 90
b = 179.87β = 90
c = 139.64γ = 90
Software Package:
Software NamePurpose
XDSdata reduction
Aimlessdata scaling
PHENIXrefinement
PHASERphasing

Structure Validation

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Ligand Structure Quality Assessment  



Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2017-07-26
    Type: Initial release
  • Version 1.1: 2017-08-09
    Changes: Database references