6BQR

Human TRPM4 ion channel in lipid nanodiscs in a calcium-free state


Experimental Data Snapshot

  • Method: ELECTRON MICROSCOPY
  • Resolution: 3.20 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

wwPDB Validation   3D Report Full Report


This is version 1.4 of the entry. See complete history


Literature

Structure of the human TRPM4 ion channel in a lipid nanodisc.

Autzen, H.E.Myasnikov, A.G.Campbell, M.G.Asarnow, D.Julius, D.Cheng, Y.

(2018) Science 359: 228-232

  • DOI: 10.1126/science.aar4510
  • Primary Citation of Related Structures:  
    6BQV, 6BQR

  • PubMed Abstract: 
  • Transient receptor potential (TRP) melastatin 4 (TRPM4) is a widely expressed cation channel associated with a variety of cardiovascular disorders. TRPM4 is activated by increased intracellular calcium in a voltage-dependent manner but, unlike many other TRP channels, is permeable to monovalent cations only ...

    Transient receptor potential (TRP) melastatin 4 (TRPM4) is a widely expressed cation channel associated with a variety of cardiovascular disorders. TRPM4 is activated by increased intracellular calcium in a voltage-dependent manner but, unlike many other TRP channels, is permeable to monovalent cations only. Here we present two structures of full-length human TRPM4 embedded in lipid nanodiscs at ~3-angstrom resolution, as determined by single-particle cryo-electron microscopy. These structures, with and without calcium bound, reveal a general architecture for this major subfamily of TRP channels and a well-defined calcium-binding site within the intracellular side of the S1-S4 domain. The structures correspond to two distinct closed states. Calcium binding induces conformational changes that likely prime the channel for voltage-dependent opening.


    Organizational Affiliation

    Howard Hughes Medical Institute, University of California, San Francisco, CA 94143, 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, D1094Homo 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: 3.20 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

Structure Validation

View Full Validation Report



Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)United StatesR01GM098672
National Institutes of Health/Office of the DirectorUnited StatesS10OD020054
National Institutes of Health/Office of the DirectorUnited StatesS10OD021741
National Institutes of Health/National Institute of Neurological Disorders and Stroke (NIH/NINDS)United StatesR01NS047723
Danish Council of Independent ResearchDenmarkDFF-5051-00085

Revision History  (Full details and data files)

  • Version 1.0: 2017-12-20
    Type: Initial release
  • Version 1.1: 2018-01-17
    Changes: Author supporting evidence
  • Version 1.2: 2018-01-24
    Changes: Database references
  • Version 1.3: 2018-08-22
    Changes: Data collection, Database references
  • Version 1.4: 2019-12-18
    Changes: Author supporting evidence