6D7T

Cryo-EM structure of human TRPV6-Y467A in complex with 2-Aminoethoxydiphenyl borate (2-APB)


Experimental Data Snapshot

  • Method: ELECTRON MICROSCOPY
  • Resolution: 4.44 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

Structural bases of TRP channel TRPV6 allosteric modulation by 2-APB.

Singh, A.K.Saotome, K.McGoldrick, L.L.Sobolevsky, A.I.

(2018) Nat Commun 9: 2465-2465

  • DOI: 10.1038/s41467-018-04828-y
  • Primary Citation of Related Structures:  
    6D7Q, 6D7T, 6D7S, 6D7V, 6D7X, 6D7P, 6D7O

  • PubMed Abstract: 
  • Transient receptor potential (TRP) channels are involved in various physiological processes, including sensory transduction. The TRP channel TRPV6 mediates calcium uptake in epithelia and its expression is dramatically increased in numerous types of canc ...

    Transient receptor potential (TRP) channels are involved in various physiological processes, including sensory transduction. The TRP channel TRPV6 mediates calcium uptake in epithelia and its expression is dramatically increased in numerous types of cancer. TRPV6 inhibitors suppress tumor growth, but the molecular mechanism of inhibition remains unknown. Here, we present crystal and cryo-EM structures of human and rat TRPV6 bound to 2-aminoethoxydiphenyl borate (2-APB), a TRPV6 inhibitor and modulator of numerous TRP channels. 2-APB binds to TRPV6 in a pocket formed by the cytoplasmic half of the S1-S4 transmembrane helix bundle. Comparing human wild-type and high-affinity mutant Y467A structures, we show that 2-APB induces TRPV6 channel closure by modulating protein-lipid interactions. Mutagenesis and functional analyses suggest that the identified 2-APB binding site might be present in other members of vanilloid subfamily TRP channels. Our findings reveal a mechanism of ion channel allosteric modulation that can be exploited for therapeutic design.


    Organizational Affiliation

    Department of Biochemistry and Molecular Biophysics, Columbia University, 650 West 168th Street, New York, NY, 10032, USA. as4005@cumc.columbia.edu.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Transient receptor potential cation channel subfamily V member 6 ABCD742Homo sapiensMutation(s): 1 
Gene Names: TRPV6ECAC2
Membrane protein
Mpstruc
Group: 
TRANSMEMBRANE PROTEINS: ALPHA-HELICAL
Sub Group: 
Channels: Transient Receptor Potential (TRP)
Protein: 
TRPV6 transient receptor potential calcium channel in amphipols, Y467A mutant
Find proteins for Q9H1D0 (Homo sapiens)
Explore Q9H1D0 
Go to UniProtKB:  Q9H1D0
NIH Common Fund Data Resources
PHAROS:  Q9H1D0
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: ELECTRON MICROSCOPY
  • Resolution: 4.44 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 Human Genome Research Institute (NIH/NHGRI)United States1R01CA206573-01A1

Revision History 

  • Version 1.0: 2018-07-18
    Type: Initial release
  • Version 1.1: 2019-12-18
    Changes: Author supporting evidence, Other