5CXV

Structure of the human M1 muscarinic acetylcholine receptor bound to antagonist Tiotropium


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.7 Å
  • R-Value Free: 0.282 
  • R-Value Work: 0.231 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Crystal structures of the M1 and M4 muscarinic acetylcholine receptors.

Thal, D.M.Sun, B.Feng, D.Nawaratne, V.Leach, K.Felder, C.C.Bures, M.G.Evans, D.A.Weis, W.I.Bachhawat, P.Kobilka, T.S.Sexton, P.M.Kobilka, B.K.Christopoulos, A.

(2016) Nature 531: 335-340

  • DOI: 10.1038/nature17188
  • Primary Citation of Related Structures:  5DSG

  • PubMed Abstract: 
  • Muscarinic M1-M5 acetylcholine receptors are G-protein-coupled receptors that regulate many vital functions of the central and peripheral nervous systems. In particular, the M1 and M4 receptor subtypes have emerged as attractive drug targets for trea ...

    Muscarinic M1-M5 acetylcholine receptors are G-protein-coupled receptors that regulate many vital functions of the central and peripheral nervous systems. In particular, the M1 and M4 receptor subtypes have emerged as attractive drug targets for treatments of neurological disorders, such as Alzheimer's disease and schizophrenia, but the high conservation of the acetylcholine-binding pocket has spurred current research into targeting allosteric sites on these receptors. Here we report the crystal structures of the M1 and M4 muscarinic receptors bound to the inverse agonist, tiotropium. Comparison of these structures with each other, as well as with the previously reported M2 and M3 receptor structures, reveals differences in the orthosteric and allosteric binding sites that contribute to a role in drug selectivity at this important receptor family. We also report identification of a cluster of residues that form a network linking the orthosteric and allosteric sites of the M4 receptor, which provides new insight into how allosteric modulation may be transmitted between the two spatially distinct domains.


    Organizational Affiliation

    Drug Discovery Biology and Department of Pharmacology, Monash Institute of Pharmaceutical Sciences, Monash University, Parkville, 3052, Victoria, Australia.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Muscarinic acetylcholine receptor M1,Endolysin,Muscarinic acetylcholine receptor M1
A
515Homo sapiensEnterobacteria phage T4
This entity is chimeric
Gene Names: CHRM1, E
EC: 3.2.1.17
Membrane protein
mpstruct
Group: 
TRANSMEMBRANE PROTEINS: ALPHA-HELICAL
Sub Group: 
G Protein-Coupled Receptors (GPCRs)
Protein: 
M1 human muscarinic acetylcholine receptor with bound tiotropium
Find proteins for P11229 (Homo sapiens)
Go to Gene View: CHRM1
Go to UniProtKB:  P11229
Find proteins for P00720 (Enterobacteria phage T4)
Go to UniProtKB:  P00720
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
FLAG peptide
C
7N/AN/A
Protein Feature View is not available: No corresponding UniProt sequence found.
Small Molecules
Ligands 5 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
0HK
Query on 0HK

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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
Y01
Query on Y01

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Download CCD File 
A
CHOLESTEROL HEMISUCCINATE
C31 H50 O4
WLNARFZDISHUGS-MIXBDBMTSA-N
 Ligand Interaction
GOL
Query on GOL

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Download CCD File 
A
GLYCEROL
GLYCERIN; PROPANE-1,2,3-TRIOL
C3 H8 O3
PEDCQBHIVMGVHV-UHFFFAOYSA-N
 Ligand Interaction
EDO
Query on EDO

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Download CCD File 
A
1,2-ETHANEDIOL
ETHYLENE GLYCOL
C2 H6 O2
LYCAIKOWRPUZTN-UHFFFAOYSA-N
 Ligand Interaction
PGE
Query on PGE

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Download CCD File 
A
TRIETHYLENE GLYCOL
C6 H14 O4
ZIBGPFATKBEMQZ-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.7 Å
  • R-Value Free: 0.282 
  • R-Value Work: 0.231 
  • Space Group: P 21 21 21
Unit Cell:
Length (Å)Angle (°)
a = 58.053α = 90.00
b = 72.186β = 90.00
c = 175.688γ = 90.00
Software Package:
Software NamePurpose
HKL-2000data collection
HKL-2000data reduction
HKL-2000data scaling
PDB_EXTRACTdata extraction
REFMACrefinement
PHASERphasing

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2016-03-09
    Type: Initial release
  • Version 1.1: 2016-03-23
    Type: Database references
  • Version 1.2: 2016-03-30
    Type: Atomic model