6BWD

3.7 angstrom cryoEM structure of truncated mouse TRPM7


Experimental Data Snapshot

  • Method: ELECTRON MICROSCOPY
  • Resolution: 3.70 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

wwPDB Validation   3D Report Full Report


This is version 1.3 of the entry. See complete history


Literature

Structure of the mammalian TRPM7, a magnesium channel required during embryonic development.

Duan, J.Li, Z.Li, J.Hulse, R.E.Santa-Cruz, A.Valinsky, W.C.Abiria, S.A.Krapivinsky, G.Zhang, J.Clapham, D.E.

(2018) Proc Natl Acad Sci U S A 115: E8201-E8210

  • DOI: 10.1073/pnas.1810719115
  • Primary Citation of Related Structures:  
    5ZX5, 6BWD, 6BWF

  • PubMed Abstract: 
  • The transient receptor potential ion channel subfamily M, member 7 (TRPM7), is a ubiquitously expressed protein that is required for mouse embryonic development. TRPM7 contains both an ion channel and an α-kinase. The channel domain comprises a nonselective cation channel with notable permeability to Mg 2+ and Zn 2+ Here, we report the closed state structures of the mouse TRPM7 channel domain in three different ionic conditions to overall resolutions of 3 ...

    The transient receptor potential ion channel subfamily M, member 7 (TRPM7), is a ubiquitously expressed protein that is required for mouse embryonic development. TRPM7 contains both an ion channel and an α-kinase. The channel domain comprises a nonselective cation channel with notable permeability to Mg 2+ and Zn 2+ Here, we report the closed state structures of the mouse TRPM7 channel domain in three different ionic conditions to overall resolutions of 3.3, 3.7, and 4.1 Å. The structures reveal key residues for an ion binding site in the selectivity filter, with proposed partially hydrated Mg 2+ ions occupying the center of the conduction pore. In high [Mg 2+ ], a prominent external disulfide bond is found in the pore helix, which is essential for ion channel function. Our results provide a structural framework for understanding the TRPM1/3/6/7 subfamily and extend the knowledge base upon which to study the diversity and evolution of TRP channels.


    Organizational Affiliation

    Department of Neurobiology, Harvard Medical School, Boston, MA 02115.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Transient receptor potential cation channel subfamily M member 7A, B, C, D955Mus musculusMutation(s): 0 
Gene Names: Trpm7ChakLtrpc7
EC: 2.7.11.1
Membrane Entity: Yes 
UniProt & NIH Common Fund Data Resources
Find proteins for Q923J1 (Mus musculus)
Explore Q923J1 
Go to UniProtKB:  Q923J1
IMPC:  MGI:1929996
Protein Feature View
Expand
  • Reference Sequence
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
Y01
Query on Y01

Download Ideal Coordinates CCD File 
BA [auth D] , CA [auth D] , G [auth A] , H [auth A] , I [auth A] , J [auth A] , K [auth A] , L [auth A] , 
BA [auth D],  CA [auth D],  G [auth A],  H [auth A],  I [auth A],  J [auth A],  K [auth A],  L [auth A],  O [auth B],  P [auth B],  Q [auth B],  R [auth B],  S [auth C],  T [auth C],  U [auth C],  V [auth C],  W [auth C],  X [auth C],  Y [auth C],  Z [auth C]
CHOLESTEROL HEMISUCCINATE
C31 H50 O4
WLNARFZDISHUGS-MIXBDBMTSA-N
 Ligand Interaction
MG
Query on MG

Download Ideal Coordinates CCD File 
AA [auth D], E [auth A], F [auth A], M [auth B], N [auth B]MAGNESIUM ION
Mg
JLVVSXFLKOJNIY-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: ELECTRON MICROSCOPY
  • Resolution: 3.70 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: 2018-08-15
    Type: Initial release
  • Version 1.1: 2018-08-29
    Changes: Data collection, Database references
  • Version 1.2: 2018-09-05
    Changes: Data collection, Database references
  • Version 1.3: 2019-12-18
    Changes: Other