4U16

M3-mT4L receptor bound to NMS


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.70 Å
  • R-Value Free: 0.285 
  • R-Value Work: 0.239 
  • R-Value Observed: 0.241 

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:  
    4U14, 4U15, 4U16

  • 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. Electronic address: kobilka@stanford.edu.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Muscarinic acetylcholine receptor M3,Lysozyme,Muscarinic acetylcholine receptor M3AB418Rattus norvegicusEscherichia virus T4Mutation(s): 0 
Gene Names: Chrm3Chrm-3
EC: 3.2.1.17
Find proteins for P08483 (Rattus norvegicus)
Explore P08483 
Go to UniProtKB:  P08483
Find proteins for D9IEF7 (Enterobacteria phage T4)
Explore D9IEF7 
Go to UniProtKB:  D9IEF7
Protein Feature View
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  • Reference Sequence
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
3C0
Query on 3C0

Download CCD File 
A, B
N-methyl scopolamine
C18 H24 N O4
LZCOQTDXKCNBEE-IKIFYQGPSA-N
 Ligand Interaction
TAR
Query on TAR

Download CCD File 
A, B
D(-)-TARTARIC ACID
C4 H6 O6
FEWJPZIEWOKRBE-LWMBPPNESA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.70 Å
  • R-Value Free: 0.285 
  • R-Value Work: 0.239 
  • R-Value Observed: 0.241 
  • Space Group: C 1 2 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 153.391α = 90
b = 187.18β = 99.78
c = 53.548γ = 90
Software Package:
Software NamePurpose
PHENIXrefinement
SCALEPACKdata scaling
PDB_EXTRACTdata extraction
HKL-2000data scaling

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2014-11-26
    Type: Initial release
  • Version 1.1: 2014-12-24
    Changes: Database references
  • Version 1.2: 2017-11-22
    Changes: Database references, Derived calculations, Other, Refinement description, Source and taxonomy