Biological Assembly 1  

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

Biological assembly 1 assigned by authors.

Macromolecule Content

• Total Structure Weight: 3.85 kDa 
• Atom Count: 260 
• Modelled Residue Count: 35 
• Deposited Residue Count: 35 
• Unique protein chains: 1

 2KGU

Spatial structure of purotoxin-1 in water

• PDB DOI: 10.2210/pdb2KGU/pdb

• Classification: TOXIN
• Organism(s): Alopecosa marikovskyi
• Expression System: Escherichia coli
• Mutation(s): No 


• Deposited: 2009-03-20 Released: 2010-03-31 
• Deposition Author(s): Nadezhdin, K., Vassilevski, A., Arseniev, A., Grishin, E., Pluzhnikov, K., Korolkova, Y.

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Experimental Data Snapshot

• Method: SOLUTION NMR
• Conformers Calculated: 100 
• Conformers Submitted: 20 
• Selection Criteria: target function 

Literature

Novel peptide from spider venom inhibits P2X3 receptors and inflammatory pain.

Grishin, E.V., Savchenko, G.A., Vassilevski, A.A., Korolkova, Y.V., Boychuk, Y.A., Viatchenko-Karpinski, V.Y., Nadezhdin, K.D., Arseniev, A.S., Pluzhnikov, K.A., Kulyk, V.B., Voitenko, N.V., Krishtal, O.O.

(2010) Ann Neurol 67: 680-683

• PubMed: 20437566 
• DOI: 10.1002/ana.21949
• Primary Citation of Related Structures:  
  2KGU


• PubMed Abstract: 
  

P2X3 purinoreceptors expressed in mammalian sensory neurons play a key role in several processes, including pain perception. From the venom of the Central Asian spider Geolycosa sp., we have isolated a novel peptide, named purotoxin-1 (PT1), which is to our knowledge the first natural molecule exerting powerful and selective inhibitory action on P2X3 receptors. PT1 dramatically slows down the removal of desensitization of these receptors. The peptide demonstrates potent antinociceptive properties in animal models of inflammatory pain.

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Organizational Affiliation: 

Laboratory of Neuroreceptors and Neuroregulators, Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, Moscow, Russia.

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Purotoxin-1	A	35	Alopecosa marikovskyi	Mutation(s): 0  Gene Names: 320151
UniProt
Find proteins for P86269 (Alopecosa marikovskyi) Explore P86269  Go to UniProtKB:  P86269

Experimental Data & Validation

Experimental Data

• Method: SOLUTION NMR
• Conformers Calculated: 100 
• Conformers Submitted: 20 
• Selection Criteria: target function 

Structure Validation

Entry History 

Deposition Data

• Released Date: 2010-03-31 
Deposition Author(s): Nadezhdin, K., Vassilevski, A., Arseniev, A., Grishin, E., Pluzhnikov, K., Korolkova, Y.

Revision History  

• Version 1.0: 2010-03-31
  Type: Initial release
  
• Version 1.1: 2011-07-13
  Changes: Version format compliance
• Version 1.2: 2019-05-15
  Changes: Data collection, Source and taxonomy