“Identification of Bordetella pertusssis virulence associated outer membrane proteins”.

PASSERINI DE ROSSI, BEATRIZ; FRIEDMAN, L.E; GONZÁLEZ FLECHA, F.L; CASTELLO, P.R.,; FRANCO, M. A; ROSSI, J.P.F.C

FEMS MICROBIOLOGY LETTERS

Blackwell Pub.,

Lugar: London; Año: 1999 vol. 172 p. 9 - 13

0378-1097

AbstractBordetella pertussis virulence-associated 30-, 32-, 90- and 95-kDa outer membrane proteins were purified and theirN-terminal amino acid sequences were determined. The 30- and 32-kDa outer membrane proteins showed identity to theC-terminal region of the precursors of the serum resistance protein (BrkA) and the tracheal colonization factor, respectively.We confirmed the cleavage site of these precursors after N731 for BrkA and after N393 for tracheal colonization factor.Associated with the 32-kDa outer membrane protein, we found a new group of 36-kDa virulence-associated peptides. The95-kDa outer membrane protein showed identity to Vag8. The 90-kDa outer membrane protein did not show homology withthe described proteins. We report the N-termini sequence of Vir-90, a novel potential virulence factor. z 1999 Federation ofEuropean Microbiological Societies. Published by Elsevier Science B.V. All rights reserved.Keywords: Bordetella pertussis; Virulence associated-outer membrane protein; BrkA precursor; Tracheal colonization factor precursor;