4U14

Structure of the M3 muscarinic acetylcholine receptor bound to the antagonist tiotropium crystallized with disulfide-stabilized T4 lysozyme (dsT4L)


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.57 Å
  • R-Value Free: 0.325 
  • R-Value Work: 0.272 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Modified T4 Lysozyme Fusion Proteins Facilitate G Protein-Coupled Receptor Crystallogenesis.

Thorsen, T.S.Matt, R.Weis, W.I.Kobilka, B.K.

(2014) Structure 22: 1657-1664

  • DOI: 10.1016/j.str.2014.08.022
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • G protein-coupled receptors (GPCRs) mediate the majority of cellular responses to hormones and neurotransmitters. Most GPCR crystal structures have been obtained using a fusion protein strategy where the flexible third intracellular loop is replaced ...

    G protein-coupled receptors (GPCRs) mediate the majority of cellular responses to hormones and neurotransmitters. Most GPCR crystal structures have been obtained using a fusion protein strategy where the flexible third intracellular loop is replaced by T4 lysozyme (T4L). However, wild-type T4L may not be ideally suited for all GPCRs because of its size and the inherent flexibility between the N- and C-terminal subdomains. Here we report two modified T4L variants, designed to address flexibility and size, that can be used to optimize crystal quality or promote alternative packing interactions. These variants were tested on the M3 muscarinic receptor (M3). The original M3-T4L fusion protein produced twinned crystals that yielded a 3.4 Å structure from a 70 crystal data set. We replaced T4L with the modified T4L variants. Both T4L variants yielded M3 muscarinic receptor crystals with alternate lattices that were not twinned, including one that was solved at 2.8 Å resolution.


    Organizational Affiliation

    Department of Molecular and Cellular Physiology, Stanford University School of Medicine, 279 Campus Drive, Stanford, CA 94305, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Muscarinic acetylcholine receptor M3,Endolysin,Muscarinic acetylcholine receptor M3
A
460Rattus norvegicusEnterobacteria phage T4
This entity is chimeric
Mutation(s): 0 
Gene Names: Chrm3 (Chrm-3), E
EC: 3.2.1.17
Find proteins for P08483 (Rattus norvegicus)
Go to UniProtKB:  P08483
Find proteins for P00720 (Enterobacteria phage T4)
Go to UniProtKB:  P00720
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
0HK
Query on 0HK

Download SDF File 
Download CCD File 
A
(1R,2R,4S,5S,7S)-7-{[hydroxy(dithiophen-2-yl)acetyl]oxy}-9,9-dimethyl-3-oxa-9-azoniatricyclo[3.3.1.0~2,4~]nonane
Tiotropium
C19 H22 N O4 S2
LERNTVKEWCAPOY-DZZGSBJMSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.57 Å
  • R-Value Free: 0.325 
  • R-Value Work: 0.272 
  • Space Group: P 41 21 2
Unit Cell:
Length (Å)Angle (°)
a = 54.952α = 90.00
b = 54.952β = 90.00
c = 348.030γ = 90.00
Software Package:
Software NamePurpose
PHENIXrefinement

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 StatesGM08311806
National Science Foundation (United States)United StatesCHE-1223785
Mathers FoundationUnited States--
Benzon FoundationDenmark--

Revision History 

  • Version 1.0: 2014-11-26
    Type: Initial release
  • Version 1.1: 2014-12-24
    Type: Database references
  • Version 1.2: 2017-09-13
    Type: Author supporting evidence, Database references, Derived calculations, Other, Source and taxonomy