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

TitleStructural insight in the inhibition of adherence of F4 fimbriae producing enterotoxigenic Escherichia coli by llama single domain antibodies.
Publication TypeJournal Article
Year of Publication2015
AuthorsMoonens, K., I. Van den Broeck, E. Okello, E. Pardon, M. De Kerpel, H. Remaut, and H. De Greve
JournalVet Res
Volume46
Pagination14
Date Published2015 Feb 24
ISSN1297-9716
KeywordsAdhesins, Escherichia coli, Animals, Camelids, New World, Crystallography, X-Ray, Diarrhea, Enterotoxigenic Escherichia coli, Escherichia coli Infections, Fimbriae, Bacterial, Single-Domain Antibodies, Swine, Swine Diseases, Virus Shedding
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 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.

DOI10.1186/s13567-015-0151-x
Alternate JournalVet. Res.
PubMed ID25828907
PubMed Central IDPMC4337312
Research group: