4WEM

Co-complex structure of the F4 fimbrial adhesin FaeG variant ac with llama single domain antibody V1


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.55 Å
  • R-Value Free: 0.193 
  • R-Value Work: 0.169 
  • R-Value Observed: 0.170 

wwPDB Validation   3D Report Full Report


This is version 1.1 of the entry. See complete history


Literature

Structural insight in the inhibition of adherence of F4 fimbriae producing enterotoxigenic Escherichia coli by llama single domain antibodies.

Moonens, K.Van den Broeck, I.Okello, E.Pardon, E.De Kerpel, M.Remaut, H.De Greve, H.

(2015) Vet Res 46: 14-14

  • DOI: 10.1186/s13567-015-0151-x
  • Primary Citation of Related Structures:  
    4WEU, 4WEM, 4WEN

  • PubMed Abstract: 
  • Enterotoxigenic Escherichia coli that cause neonatal and post-weaning diarrhea in piglets express F4 fimbriae to mediate attachment towards host receptors. Recently we described how llama single domain antibodies (VHHs) fused to IgA, produced in Arab ...

    Enterotoxigenic Escherichia coli that cause neonatal and post-weaning diarrhea in piglets express F4 fimbriae to mediate attachment towards host receptors. Recently we described how llama single domain antibodies (VHHs) fused to IgA, produced in Arabidopsis thaliana seeds and fed to piglets resulted in a progressive decline in shedding of F4 positive ETEC bacteria. Here we present the structures of these inhibiting VHHs in complex with the major adhesive subunit FaeG. A conserved surface, distant from the lactose binding pocket, is targeted by these VHHs, highlighting the possibility of targeting epitopes on single-domain adhesins that are non-involved in receptor binding.


    Related Citations: 
    • Orally fed seeds producing designer IgAs protect weaned piglets against enterotoxigenic Escherichia coli infection.
      Virdi, V., Coddens, A., De Buck, S., Millet, S., Goddeeris, B.M., Cox, E., De Greve, H., Depicker, A.
      (2013) Proc Natl Acad Sci U S A 110: 11809

    Organizational Affiliation

    Department of Chemistry, Chonnam National University, Gwangju 61186, Republic of Korea. Electronic address: jsunkim@chonnam.ac.kr.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
K88 fimbrial protein ACA272Escherichia coliMutation(s): 0 
Gene Names: faeG
Find proteins for P14190 (Escherichia coli)
Explore P14190 
Go to UniProtKB:  P14190
Protein Feature View
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  • Reference Sequence
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
Anti-F4+ETEC bacteria VHH variable regionB127Lama glamaMutation(s): 0 
Find proteins for R9W2R6 (Lama glama)
Explore R9W2R6 
Go to UniProtKB:  R9W2R6
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.55 Å
  • R-Value Free: 0.193 
  • R-Value Work: 0.169 
  • R-Value Observed: 0.170 
  • Space Group: P 3 2 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 145.483α = 90
b = 145.483β = 90
c = 38.847γ = 120
Software Package:
Software NamePurpose
REFMACrefinement
XDSdata reduction
SCALAdata scaling
PHASERphasing

Structure Validation

View Full Validation Report



Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
FWOBelgiumG030411N
FWO - HerculesBelgiumUABR/09/005

Revision History 

  • Version 1.0: 2015-02-04
    Type: Initial release
  • Version 1.1: 2015-04-15
    Changes: Database references