3S62

Structure of Fab fragment of malaria transmission blocking antibody 2A8 against P. vivax P25 protein


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 4.01 Å
  • R-Value Free: 0.310 
  • R-Value Work: 0.264 
  • R-Value Observed: 0.266 

wwPDB Validation   3D Report Full Report


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Literature

Structure of Fab fragment of malaria transmission blocking antibody 2A8 against P. vivax P25 protein

Saxena, A.K.

(2012) Int J Biol Macromol 50: 153-156

  • DOI: 10.1016/j.ijbiomac.2011.10.012
  • Primary Citation of Related Structures:  
    3S62

  • PubMed Abstract: 
  • Understanding the structural basis of recognition between antigen and antibody requires the structural comparison of free and complexed components. Previously, we have reported the crystal structure of the complex between Fab fragment of murine monoclonal antibody 2A8 (Fab2A8) and Plasmodium vivax P25 protein (Pvs25) at 3 ...

    Understanding the structural basis of recognition between antigen and antibody requires the structural comparison of free and complexed components. Previously, we have reported the crystal structure of the complex between Fab fragment of murine monoclonal antibody 2A8 (Fab2A8) and Plasmodium vivax P25 protein (Pvs25) at 3.2 Å resolution. We report here the crystallization and X-ray structure of native Fab2A8 at 4.0 Å resolution. The 2A8 antibody generated against Pvs25 prevents the formation of P. vivax oocysts in the mosquito, when assayed in membrane feeding experiment. Comparison of native Fab2A8 structure with antigen bound Fab2A8 structure indicates the significant conformational changes in CDR-H1 and CDR-H3 regions of V(H) domain and CDR-L3 region of V(L) domain of Fab2A8. Upon complex formation, the relative orientation between V(L) and V(H) domains of Fab2A8 is conserved, while significant differences are observed in elbow angles of heavy and light chains. The combing site residues of complexed Fab2A8 exhibited the reduced temperature factor compared to native Fab2A8, suggesting a loss of conformational entropy upon antigen binding.


    Organizational Affiliation

    School of Life Sciences, Jawaharlal Nehru University, New Delhi, India. ajaysaxena@mail.jnu.ac.in



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Fab fragment of antibody 2A8, Light chain L213Mus musculusMutation(s): 0 
Protein Feature View
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  • Reference Sequence
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
Fab fragment of antibody 2A8, Heavy chain H216Mus musculusMutation(s): 0 
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 4.01 Å
  • R-Value Free: 0.310 
  • R-Value Work: 0.264 
  • R-Value Observed: 0.266 
  • Space Group: C 2 2 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 134.075α = 90
b = 177.819β = 90
c = 74.624γ = 90
Software Package:
Software NamePurpose
HKL-3000data collection
PHASERphasing
REFMACrefinement
HKL-2000data reduction
SCALEPACKdata scaling

Structure Validation

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Entry History 

Deposition Data

  • Deposited Date: 2011-05-24 
  • Released Date: 2012-04-04 
  • Deposition Author(s): Saxena, A.K.

Revision History  (Full details and data files)

  • Version 1.0: 2012-04-04
    Type: Initial release