1PA0

CRYSTAL STRUCTURE OF BNSP-7, A LYS49-PHOSPHOLIPASE A2


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.20 Å
  • R-Value Free: 0.266 
  • R-Value Work: 0.208 

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This is version 1.2 of the entry. See complete history


Literature

Crystal structures of BnSP-7 and BnSP-6, two Lys49-phospholipases A(2): quaternary structure and inhibition mechanism insights.

Magro, A.J.Soares, A.M.Giglio, J.R.Fontes, M.R.

(2003) Biochem Biophys Res Commun 311: 713-720

  • DOI: 10.1016/j.bbrc.2003.10.047
  • Primary Citation of Related Structures:  
    1PA0, 1PC9

  • PubMed Abstract: 
  • Phospholipases A(2) are components of Bothrops venoms responsible for disruption of cell membrane integrity via hydrolysis of its phospholipids. A class of PLA(2)-like proteins has been described which despite PLA(2) activity on artificial substrate, due to a D49K mutation, is still highly myonecrotic ...

    Phospholipases A(2) are components of Bothrops venoms responsible for disruption of cell membrane integrity via hydrolysis of its phospholipids. A class of PLA(2)-like proteins has been described which despite PLA(2) activity on artificial substrate, due to a D49K mutation, is still highly myonecrotic. This work reports the X-ray structure determination of two Lys49-PLA(2)s from Bothrops neuwiedi pauloensis (BnSP-7 and BnSP-6) and, for the first time, the comparison of eight dimeric Lys49-PLA(2)s. This comparison reveals that there are not just two ("open" and "closed") but at least six different conformations. The binding of fatty acid observed in three recent Lys49-PLA(2) structures seems to be independent of their quaternary conformation. Cys29 polarization by Lys122 is not significant for BnSP-7 and BnSP-6 or other structures not bound by fatty acids. These structures may be in an "active" state when nothing is bound to them and the Lys122/Cys29 interactions are weak or absent.


    Related Citations: 
    • Crystallization and preliminary X-ray diffraction analysis of a myotoxic phospholipase A2 homologue from Bothrops neuwiedi pauloensis venom
      Fontes, M.R., Soares, A.M., Rodrigues, V.M., Fernandes, A.C., Da Silva, R.J., Giglio, J.R.
      (1999) Biochim Biophys Acta 1432: 393
    • Structural and Function Characterization of BnSP-7, a Lys49 Myotoxic Phospholipase A2 Homologue from Bothrops neuwiedi Venom
      Soares, A.M., Guerra-Sa, R., Borja-Oliveira, C.R., Rodrigues, V.M., Rodrigues-Simioni, L., Rodrigues, V., Fontes, M.R., Lomonte, B., Gutirrez, J.M., Giglio, J.R.
      (2000) Arch Biochem Biophys 378: 201

    Organizational Affiliation

    Departamento de Física e Biofísica, IB, UNESP, Botucatu-SP, Brazil.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Myotoxic phospholipase A2-likeA, B121Bothrops pauloensisMutation(s): 0 
EC: 3.1.1.4
Find proteins for Q9IAT9 (Bothrops pauloensis)
Explore Q9IAT9 
Go to UniProtKB:  Q9IAT9
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.20 Å
  • R-Value Free: 0.266 
  • R-Value Work: 0.208 
  • Space Group: P 31 2 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 57.33α = 90
b = 57.33β = 90
c = 130.86γ = 120
Software Package:
Software NamePurpose
DENZOdata reduction
SCALEPACKdata scaling
AMoREphasing
CNSrefinement

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2004-07-27
    Type: Initial release
  • Version 1.1: 2008-04-29
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance