2PNN

Crystal Structure of the Ankyrin Repeat Domain of Trpv1


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.70 Å
  • R-Value Free: 0.248 
  • R-Value Work: 0.199 
  • R-Value Observed: 0.202 

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This is version 1.2 of the entry. See complete history


Literature

The Ankyrin Repeats of TRPV1 Bind Multiple Ligands and Modulate Channel Sensitivity.

Lishko, P.V.Procko, E.Jin, X.Phelps, C.B.Gaudet, R.

(2007) Neuron 54: 905-918

  • DOI: 10.1016/j.neuron.2007.05.027
  • Primary Citation of Related Structures:  
    2NYJ, 2PNN

  • PubMed Abstract: 
  • TRPV1 plays a key role in nociception, as it is activated by heat, low pH, and ligands such as capsaicin, leading to a burning pain sensation. We describe the structure of the cytosolic ankyrin repeat domain (ARD) of TRPV1 and identify a multiligand-binding site important in regulating channel sensitivity within the TRPV1-ARD ...

    TRPV1 plays a key role in nociception, as it is activated by heat, low pH, and ligands such as capsaicin, leading to a burning pain sensation. We describe the structure of the cytosolic ankyrin repeat domain (ARD) of TRPV1 and identify a multiligand-binding site important in regulating channel sensitivity within the TRPV1-ARD. The structure reveals a binding site that accommodates triphosphate nucleotides such as ATP, and biochemical studies demonstrate that calmodulin binds the same site. Electrophysiology experiments show that either ATP or PIP2 prevent desensitization to repeated applications of capsaicin, i.e., tachyphylaxis, while calmodulin plays an opposing role and is necessary for tachyphylaxis. Mutations in the TRPV1-ARD binding site eliminate tachyphylaxis. We present a model for the calcium-dependent regulation of TRPV1 via competitive interactions of ATP and calmodulin at the TRPV1-ARD-binding site and discuss its relationship to the C-terminal region previously implicated in interactions with PIP2 and calmodulin.


    Organizational Affiliation

    Department of Molecular and Cellular Biology, Harvard University, 7 Divinity Avenue, Cambridge, MA 02138, USA.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Transient receptor potential cation channel subfamily V member 1A273Rattus norvegicusMutation(s): 3 
Gene Names: Trpv1Vr1Vr1l
UniProt
Find proteins for O35433 (Rattus norvegicus)
Explore O35433 
Go to UniProtKB:  O35433
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupO35433
Protein Feature View
Expand
  • Reference Sequence
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
ATP
Query on ATP

Download Ideal Coordinates CCD File 
B [auth A]ADENOSINE-5'-TRIPHOSPHATE
C10 H16 N5 O13 P3
ZKHQWZAMYRWXGA-KQYNXXCUSA-N
 Ligand Interaction
Modified Residues  1 Unique
IDChainsTypeFormula2D DiagramParent
MSE
Query on MSE
A L-PEPTIDE LINKINGC5 H11 N O2 SeMET
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.70 Å
  • R-Value Free: 0.248 
  • R-Value Work: 0.199 
  • R-Value Observed: 0.202 
  • Space Group: H 3
  • Diffraction Data DOI: 10.15785/SBGRID/15 SBGrid
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 99.469α = 90
b = 99.469β = 90
c = 106.729γ = 120
Software Package:
Software NamePurpose
MOLREPphasing
REFMACrefinement
CrystalCleardata collection
CrystalCleardata reduction
HKL-2000data scaling

Structure Validation

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Ligand Structure Quality Assessment 



Entry History 

Deposition Data

  • Deposited Date: 2007-04-24 
  • Released Date: 2007-07-03 
  • Deposition Author(s): Jin, X., Gaudet, R.

Revision History  (Full details and data files)

  • Version 1.0: 2007-07-03
    Type: Initial release
  • Version 1.1: 2008-05-01
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Advisory, Version format compliance