Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)

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Vizcaíno, N. et al.

Localization and characterization of a specific linear epitope of the Brucella DnaK protein.

We have previously produced and characterized four monoclonal antibodies to the Brucella DnaK protein which were derived from mice infected with B. melitensis or immunized with the B. melitensis cell wall fraction. By use of a recombinant DNA technique, we have localized a linear epitope, recognized by two of these monoclonal antibodies (V78/07B01/ G11 and V78/09D04/D08), in the last 21 amino acids of the C-terminal region of the Brucella DnaK protein. The C-terminal region has been reported to be the most variable region among DnaK proteins. The two other monoclonal antibodies (A53/09G03/D02 and A53/01C10/ A10) failed to react with the recombinant clones and might recognize discontinuous epitopes of the Brucella DnaK protein. The four monoclonal antibodies reacted with all recognized Brucella species and biovars in immunoblotting after SDS-PAGE. Monoclonal antibodies V78/07B01/ G11 and V78/09D04/D08 did not react with reported cross-reacting bacteria nor with bacteria of the alpha-2 subdivision of the class Proteobacteria for which a close genetic relationship with Brucella spp. has been reported. However, monoclonal antibodies A53/09G03/D02 and A53/01C10/ A10 reacted with Phyllobacterium rubiacearum and/or Ochrobactrum anthropi, both bacteria of the alpha-2 subdivision of the class Proteobacteria. The Brucella genus DnaK specific epitopes could be of importance for diagnostic purposes.[1]

References

Localization and characterization of a specific linear epitope of the Brucella DnaK protein. Vizcaíno, N., Zygmunt, M.S., Verger, J.M., Grayon, M., Cloeckaert, A. FEMS Microbiol. Lett. (1997) [Pubmed]

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