1RJL

Structure of the complex between OspB-CT and bactericidal Fab-H6831


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.60 Å
  • R-Value Free: 0.235 
  • R-Value Work: 0.191 

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This is version 1.2 of the entry. See complete history


Literature

Structural Investigation of Borrelia burgdorferi OspB, a BactericidalFab Target.

Becker, M.Bunikis, J.Lade, B.D.Dunn, J.J.Barbour, A.G.Lawson, C.L.

(2005) J Biol Chem 280: 17363-17370

  • DOI: 10.1074/jbc.M412842200
  • Primary Citation of Related Structures:  
    1P4P, 1RJL

  • PubMed Abstract: 
  • Certain antibody Fab fragments directed against the C terminus of outer surface protein B (OspB), a major lipoprotein of the Lyme disease spirochete, Borrelia burgdorferi, have the unusual property of being bactericidal even in the absence of complement. We report here x-ray crystal structures of a C-terminal fragment of B ...

    Certain antibody Fab fragments directed against the C terminus of outer surface protein B (OspB), a major lipoprotein of the Lyme disease spirochete, Borrelia burgdorferi, have the unusual property of being bactericidal even in the absence of complement. We report here x-ray crystal structures of a C-terminal fragment of B. burgdorferi OspB, which spans residues 152-296, alone at 2.0-A resolution, and in a complex with the bactericidal Fab H6831 at 2.6-A resolution. The H6831 epitope is topologically analogous to the LA-2 epitope of OspA and is centered around OspB Lys-253, a residue essential for H6831 recognition. A beta-sheet present in the free OspB fragment is either disordered or removed by proteolysis in the H6831-bound complex. Other conformational changes between free and H6831-bound structures are minor and appear to be related to this loss. In both crystal structures, OspB C-terminal fragments form artificial dimers connected by intermolecular beta-sheets. OspB structure, stability, and possible mechanisms of killing by H6831 and other bactericidal Fabs are discussed in light of the structural data.


    Organizational Affiliation

    Biology Department, Brookhaven National Laboratory, Upton, New York 11973, USA. mbecker@bnl.gov



Macromolecules
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Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Fab H6831 L-chainA212Mus musculusMutation(s): 0 
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Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
Fab H6831 H-chainB221Mus musculusMutation(s): 0 
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Entity ID: 3
MoleculeChainsSequence LengthOrganismDetailsImage
Outer surface protein BC95Borreliella burgdorferiMutation(s): 0 
Gene Names: ospBBBA16
UniProt
Find proteins for P17739 (Borreliella burgdorferi (strain ATCC 35210 / DSM 4680 / CIP 102532 / B31))
Explore P17739 
Go to UniProtKB:  P17739
Entity Groups  
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UniProt GroupP17739
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Entity ID: 4
MoleculeChainsSequence LengthOrganismDetailsImage
Outer surface protein BD5Borreliella burgdorferiMutation(s): 0 
Gene Names: OSPBBBA16
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.60 Å
  • R-Value Free: 0.235 
  • R-Value Work: 0.191 
  • Space Group: C 1 2 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 186.286α = 90
b = 37.271β = 90.66
c = 87.939γ = 90
Software Package:
Software NamePurpose
CNSrefinement
DENZOdata reduction
SCALEPACKdata scaling
AMoREphasing

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2004-11-30
    Type: Initial release
  • Version 1.1: 2008-04-29
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance