5WP6

Cryo-EM structure of a human TRPM4 channel in complex with calcium and decavanadate


Experimental Data Snapshot

  • Method: ELECTRON MICROSCOPY
  • Resolution: 3.80 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

wwPDB Validation   3D Report Full Report


This is version 1.2 of the entry. See complete history


Literature

Electron cryo-microscopy structure of a human TRPM4 channel.

Winkler, P.A.Huang, Y.Sun, W.Du, J.Lu, W.

(2017) Nature 552: 200-204

  • DOI: 10.1038/nature24674
  • Primary Citation of Related Structures:  
    5WP6

  • PubMed Abstract: 
  • Ca 2+ -activated, non-selective (CAN) ion channels sense increases of the intracellular Ca 2+ concentration, producing a flux of Na + and/or K + ions that depolarizes the cell, thus modulating cellular Ca 2+ entry ...

    Ca 2+ -activated, non-selective (CAN) ion channels sense increases of the intracellular Ca 2+ concentration, producing a flux of Na + and/or K + ions that depolarizes the cell, thus modulating cellular Ca 2+ entry. CAN channels are involved in cellular responses such as neuronal bursting activity and cardiac rhythm. Here we report the electron cryo-microscopy structure of the most widespread CAN channel, human TRPM4, bound to the agonist Ca 2+ and the modulator decavanadate. Four cytosolic C-terminal domains form an umbrella-like structure with a coiled-coil domain for the 'pole' and four helical 'ribs' spanning the N-terminal TRPM homology regions (MHRs), thus holding four subunits in a crown-like architecture. We observed two decavanadate-binding sites, one in the C-terminal domain and another in the intersubunit MHR interface. A glutamine in the selectivity filter may be an important determinant of monovalent selectivity. Our structure provides new insights into the function and pharmacology of both the CAN and the TRPM families.


    Organizational Affiliation

    Van Andel Institute, 333 Bostwick Avenue N.E., Grand Rapids, Michigan 49503, USA.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Transient receptor potential cation channel subfamily M member 4A, B, C, D1214Homo sapiensMutation(s): 0 
Gene Names: TRPM4LTRPC4
Membrane Entity: Yes 
UniProt & NIH Common Fund Data Resources
Find proteins for Q8TD43 (Homo sapiens)
Explore Q8TD43 
Go to UniProtKB:  Q8TD43
PHAROS:  Q8TD43
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: ELECTRON MICROSCOPY
  • Resolution: 3.80 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2017-12-13
    Type: Initial release
  • Version 1.1: 2017-12-20
    Changes: Database references
  • Version 1.2: 2017-12-27
    Changes: Database references