6PUS

Human TRPM2 bound to ADPR and calcium


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 1.1 of the entry. See complete history


Literature

Ligand recognition and gating mechanism through three ligand-binding sites of human TRPM2 channel.

Huang, Y.Roth, B.Lu, W.Du, J.

(2019) Elife 8

  • DOI: 10.7554/eLife.50175
  • Primary Citation of Related Structures:  
    6PUS, 6PUU, 6PUO, 6PUR

  • PubMed Abstract: 
  • TRPM2 is critically involved in diverse physiological processes including core temperature sensing, apoptosis, and immune response. TRPM2's activation by Ca 2+ and ADP ribose (ADPR), an NAD + -metabolite produced under oxidative stress and neurodegenerative conditions, suggests a role in neurological disorders ...

    TRPM2 is critically involved in diverse physiological processes including core temperature sensing, apoptosis, and immune response. TRPM2's activation by Ca 2+ and ADP ribose (ADPR), an NAD + -metabolite produced under oxidative stress and neurodegenerative conditions, suggests a role in neurological disorders. We provide a central concept between triple-site ligand binding and the channel gating of human TRPM2. We show consecutive structural rearrangements and channel activation of TRPM2 induced by binding of ADPR in two indispensable locations, and the binding of Ca 2+ in the transmembrane domain. The 8-Br-cADPR-an antagonist of cADPR-binds only to the MHR1/2 domain and inhibits TRPM2 by stabilizing the channel in an apo-like conformation. We conclude that MHR1/2 acts as a orthostatic ligand-binding site for TRPM2. The NUDT9-H domain binds to a second ADPR to assist channel activation in vertebrates, but not necessary in invertebrates. Our work provides insights into the gating mechanism of human TRPM2 and its pharmacology.


    Organizational Affiliation

    Van Andel Institute, Grand Rapids, United States.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Transient receptor potential cation channel subfamily M member 2A, D [auth B], B [auth C], C [auth D]1512Homo sapiensMutation(s): 0 
Gene Names: TRPM2EREG1KNP3LTRPC2TRPC7
Membrane Entity: Yes 
UniProt & NIH Common Fund Data Resources
Find proteins for O94759 (Homo sapiens)
Explore O94759 
Go to UniProtKB:  O94759
PHAROS:  O94759
Protein Feature View
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  • Reference Sequence
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 & Funding Information

Deposition Data

  • Deposited Date: 2019-07-18 
  • Released Date: 2019-09-25 
  • Deposition Author(s): Du, J., Lu, W., Huang, Y.

Funding OrganizationLocationGrant Number
National Institutes of Health/National Institute of Neurological Disorders and Stroke (NIH/NINDS)United StatesR01NS111031

Revision History  (Full details and data files)

  • Version 1.0: 2019-09-25
    Type: Initial release
  • Version 1.1: 2019-12-18
    Changes: Author supporting evidence