1PEN

ALPHA-CONOTOXIN PNI1


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.10 Å
  • R-Value Free: 0.152 
  • R-Value Work: 0.127 
  • R-Value Observed: 0.127 

wwPDB Validation   3D Report Full Report


This is version 1.2 of the entry. See complete history


Literature

The 1.1 A crystal structure of the neuronal acetylcholine receptor antagonist, alpha-conotoxin PnIA from Conus pennaceus.

Hu, S.H.Gehrmann, J.Guddat, L.W.Alewood, P.F.Craik, D.J.Martin, J.L.

(1996) Structure 4: 417-423

  • DOI: 10.1016/s0969-2126(96)00047-0
  • Primary Citation of Related Structures:  
    1PEN

  • PubMed Abstract: 
  • alpha-Conotoxins are peptide toxins, isolated from Conus snails, that block the nicotinic acetylcholine receptor (nAChR). The 16-residue peptides PnIA and PnIB from Conus pennaceus incorporate the same disulfide framework as other alpha-conotoxins but differ in function from most alpha-conotoxins by blocking the neuronal nAChR, rather than the skeletal muscle subtype ...

    alpha-Conotoxins are peptide toxins, isolated from Conus snails, that block the nicotinic acetylcholine receptor (nAChR). The 16-residue peptides PnIA and PnIB from Conus pennaceus incorporate the same disulfide framework as other alpha-conotoxins but differ in function from most alpha-conotoxins by blocking the neuronal nAChR, rather than the skeletal muscle subtype. The crystal structure determination of PnIA was undertaken to identify structural and surface features that might be important for biological activity.


    Related Citations: 
    • Snb: Crystal Structure Determination Via Shake-and-Bake
      Miller, R., Gallo, S.M., Khalak, H.G., Weeks, C.M.
      (1994) J Appl Crystallogr 27: 613
    • New Mollusc-Specific Alpha-Conotoxins Block Aplysia Neuronal Acetylcholine Receptors
      Fainzilber, M., Hasson, A., Oren, R., Burlingame, A.L., Gordon, D., Spira, M.E., Zlotkin, E.
      (1994) Biochemistry 33: 9523

    Organizational Affiliation

    Centre for Drug Design and Development, University of Queensland, St Lucia, Australia.



Macromolecules
  • Find similar proteins by:  Sequence   |   Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
ALPHA-CONOTOXIN PNIAA17Conus pennaceusMutation(s): 0 
UniProt
Find proteins for P50984 (Conus pennaceus)
Explore P50984 
Go to UniProtKB:  P50984
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.10 Å
  • R-Value Free: 0.152 
  • R-Value Work: 0.127 
  • R-Value Observed: 0.127 
  • Space Group: P 1 21 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 15α = 90
b = 19.8β = 113.4
c = 16.5γ = 90
Software Package:
Software NamePurpose
DENZOdata reduction
X-PLORmodel building
X-PLORrefinement
X-PLORphasing

Structure Validation

View Full Validation Report




Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 1997-04-21
    Type: Initial release
  • Version 1.1: 2008-03-24
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance