Cloning and sequencing of the bacterioferritin gene of Brucella melitensis 16M strain

P A Denoel, M S Zygmunt, V Weynants, A Tibor, B Lichtfouse, Pascal Briffeuil, J N Limet, Jean-Jacques Letesson

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Résumé

The 40 N-terminal amino acids of the 20 kDa antigen A2 from Brucella melitensis were sequenced and showed important similarities with 4 bacterioferrins. A monoclonal antibody raised against this antigen cross-reacted with Escherichia coli bacterioferritin. Hybridization of two sets of degenerate primers with B. melitensis HindIII-digested genomic DNA identified a 3.8 kb fragment. This fragment was shown to contain a bacterioferritin gene (bfr) encoding a 161-amino acid protein. The sequence of the Brucella bacterioferritin is 69% similar to that of E. coli, and many of the ferroxidase centre and haem-ligation residues are conserved.
langue originaleAnglais
Pages (de - à)238-42
Nombre de pages5
journalFEBS Letters
Volume361
Numéro de publication2-3
Etat de la publicationPublié - 1995

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