7WRC

Mouse TRPM8 in LMNG in the presence of calcium, icilin and PI(4,5)P2


Experimental Data Snapshot

  • Method: ELECTRON MICROSCOPY
  • Resolution: 3.21 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

wwPDB Validation   3D Report Full Report


This is version 1.0 of the entry. See complete history


Literature

Structures of a mammalian TRPM8 in closed state.

Zhao, C.Xie, Y.Xu, L.Ye, F.Xu, X.Yang, W.Yang, F.Guo, J.

(2022) Nat Commun 13: 3113-3113

  • DOI: https://doi.org/10.1038/s41467-022-30919-y
  • Primary Citation of Related Structures:  
    7WRA, 7WRB, 7WRC, 7WRD, 7WRE, 7WRF

  • PubMed Abstract: 

    Transient receptor potential melastatin 8 (TRPM8) channel is a Ca 2+ -permeable non-selective cation channel that acts as the primary cold sensor in humans. TRPM8 is also activated by ligands such as menthol, icilin, and phosphatidylinositol 4,5-bisphosphate (PIP 2 ), and desensitized by Ca 2+ . Here we have determined electron cryo-microscopy structures of mouse TRPM8 in the absence of ligand, and in the presence of Ca 2+ and icilin at 2.5-3.2 Å resolution. The ligand-free state TRPM8 structure represents the full-length structure of mammalian TRPM8 channels with a canonical S4-S5 linker and the clearly resolved selectivity filter and outer pore loop. TRPM8 has a short but wide selectivity filter which may account for its permeability to hydrated Ca 2+ . Ca 2+ and icilin bind in the cytosolic-facing cavity of the voltage-sensing-like domain of TRPM8 but induce little conformational change. All the ligand-bound TRPM8 structures adopt the same closed conformation as the ligand-free structure. This study reveals the overall architecture of mouse TRPM8 and the structural basis for its ligand recognition.


  • Organizational Affiliation

    Department of Biophysics, and Department of Neurology of the Fourth Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang, 310058, China.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Transient receptor potential cation channel subfamily M member 8
A, B, C, D
1,120Mus musculusMutation(s): 0 
Gene Names: Trpm8Ltrpc6Trpp8
Membrane Entity: Yes 
UniProt
Find proteins for Q8R4D5 (Mus musculus)
Explore Q8R4D5 
Go to UniProtKB:  Q8R4D5
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ8R4D5
Sequence Annotations
Expand
  • Reference Sequence
Small Molecules
Ligands 2 Unique
IDChains Name / Formula / InChI Key2D Diagram3D Interactions
KX7 (Subject of Investigation/LOI)
Query on KX7

Download Ideal Coordinates CCD File 
F [auth A],
H [auth B],
J [auth C],
L [auth D]
Icilin
C16 H13 N3 O4
RCEFMOGVOYEGJN-UHFFFAOYSA-N
CA (Subject of Investigation/LOI)
Query on CA

Download Ideal Coordinates CCD File 
E [auth A],
G [auth B],
I [auth C],
K [auth D]
CALCIUM ION
Ca
BHPQYMZQTOCNFJ-UHFFFAOYSA-N
Binding Affinity Annotations 
IDSourceBinding Affinity
KX7 BindingDB:  7WRC IC50: 58 (nM) from 1 assay(s)
EC50: min: 60, max: 300 (nM) from 4 assay(s)
Experimental Data & Validation

Experimental Data

  • Method: ELECTRON MICROSCOPY
  • Resolution: 3.21 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

Structure Validation

View Full Validation Report



Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
Ministry of Science and Technology (MoST, China)China2020YFA0908501
Ministry of Science and Technology (MoST, China)China2018YFA0508100

Revision History  (Full details and data files)

  • Version 1.0: 2022-06-22
    Type: Initial release