Biological Assembly 1  

 3D View: Structure | 1D-3D View | Electron Density | Validation Report | Ligand Interaction

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Monomer - A1 

Biological assembly 1 assigned by authors.

Macromolecule Content

• Total Structure Weight: 30.95 kDa 
• Atom Count: 2034 
• Modelled Residue Count: 248 
• Deposited Residue Count: 273 
• Unique protein chains: 1

2PNN

Crystal Structure of the Ankyrin Repeat Domain of Trpv1

• PDB DOI: 10.2210/pdb2PNN/pdb

• Classification: TRANSPORT PROTEIN
• Organism(s): Rattus norvegicus
• Expression System: Escherichia coli BL21(DE3)
• Mutation(s): Yes 


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

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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 

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

• PubMed: 17582331 
• 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. 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.

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Organizational Affiliation: 

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

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Transient receptor potential cation channel subfamily V member 1	A	273	Rattus norvegicus	Mutation(s): 3  Gene Names: Trpv1, Vr1, Vr1l
UniProt
Find proteins for O35433 (Rattus norvegicus) Explore O35433  Go to UniProtKB:  O35433

Small Molecules

Ligands 1 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
ATP	B [auth A]	ADENOSINE-5'-TRIPHOSPHATE C10 H16 N5 O13 P3 ZKHQWZAMYRWXGA-KQYNXXCUSA-N

Modified Residues  1 Unique
ID	Chains	Type	Formula	2D Diagram	Parent
MSE	A	L-PEPTIDE LINKING	C5 H11 N O2 Se		MET

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 = 99.469	α = 90
b = 99.469	β = 90
c = 106.729	γ = 120

Software Package:

Software Name	Purpose
MOLREP	phasing
REFMAC	refinement
CrystalClear	data collection
CrystalClear	data reduction
HKL-2000	data scaling

Structure Validation

Entry History 

Deposition Data

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

Revision History  

• 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