6DRK

Structure of TRPM2 ion channel receptor by single particle electron cryo-microscopy, Apo state


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

Architecture of the TRPM2 channel and its activation mechanism by ADP-ribose and calcium.

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

(2018) Nature 562: 145-149

  • DOI: 10.1038/s41586-018-0558-4
  • Primary Citation of Related Structures:  
    6DRJ, 6DRK

  • PubMed Abstract: 
  • Transient receptor potential melastatin 2 (TRPM2) is a calcium-permeable, non-selective cation channel that has an essential role in diverse physiological processes such as core body temperature regulation, immune response and apoptosis 1-4 . TRPM2 is polymodal and can be activated by a wide range of stimuli 1-7 , including temperature, oxidative stress and NAD + -related metabolites such as ADP-ribose (ADPR) ...

    Transient receptor potential melastatin 2 (TRPM2) is a calcium-permeable, non-selective cation channel that has an essential role in diverse physiological processes such as core body temperature regulation, immune response and apoptosis 1-4 . TRPM2 is polymodal and can be activated by a wide range of stimuli 1-7 , including temperature, oxidative stress and NAD + -related metabolites such as ADP-ribose (ADPR). Its activation results in both Ca 2+ entry across the plasma membrane and Ca 2+ release from lysosomes 8 , and has been linked to diseases such as ischaemia-reperfusion injury, bipolar disorder and Alzheimer's disease 9-11 . Here we report the cryo-electron microscopy structures of the zebrafish TRPM2 in the apo resting (closed) state and in the ADPR/Ca 2+ -bound active (open) state, in which the characteristic NUDT9-H domains hang underneath the MHR1/2 domain. We identify an ADPR-binding site located in the bi-lobed structure of the MHR1/2 domain. Our results provide an insight into the mechanism of activation of the TRPM channel family and define a framework for the development of therapeutic agents to treat neurodegenerative diseases and temperature-related pathological conditions.


    Organizational Affiliation

    Van Andel Research Institute, Grand Rapids, MI, USA. juan.du@vai.org.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Transient receptor potential cation channel, subfamily M, member 2A,
C [auth B],
B [auth C],
D
1474Danio rerioMutation(s): 0 
Gene Names: trpm2
Membrane Entity: Yes 
UniProt
Find proteins for A0A0R4IMY7 (Danio rerio)
Explore A0A0R4IMY7 
Go to UniProtKB:  A0A0R4IMY7
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupA0A0R4IMY7
Protein Feature View
Expand
  • 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: 2018-09-19
    Type: Initial release
  • Version 1.1: 2018-09-26
    Changes: Data collection, Structure summary
  • Version 1.2: 2018-10-10
    Changes: Data collection, Database references, Structure summary