title: Cloning, sequencing and characterisation of a Listeria monocytogenes gene encoding a fibronectin-binding protein.
abstract: Listeria monocytogenes is a gram-positive, non-sporulating food-borne pathogen of man and animals that is able to invade many eukaryotic cells. L. monocytogenes possesses several proteins that bind fibronectin. In this study, an L. monocytogenes DNA library in pUC19 was screened with fibronectin and a gene encoding a 24.6-kDa fibronectin-binding protein (Fbp) was isolated and sequenced. Transcripts of the fbp gene were found in wild-type, in deltaprfA, and PrfA-S183A strains, despite the presence of a 'PrfA-like' box around its ribosome-binding site. The fbp gene was found to be present in all tested isolates of the species L. monocytogenes and a homologous DNA fragment was amplified in L. welshimeri. No homologies between the fbp gene and its translation product with any other DNA or proteins deposited in databanks were found. Restriction endonuclease-PCR (RE-PCR) showed that the fbp gene displays a degree of allelic variation among isolates of L. monocytogenes, whereas the corresponding amplified fragment of L. welshimeri seems to be monomorphic among isolates of this species. RE-PCR with Hha I, Dde I or Taq I produced DNA banding profiles specific for each of these two species, allowing their identification.
authors.affiliation: Department of Virology, Pasteur Institute, Brussels, Belgium.
authors.forename: Philippe
authors.initials: P
authors.lastname: Gilot
authors.affiliation: Department of Virology, Pasteur Institute, Brussels, Belgium.
authors.forename: Yves
authors.initials: Y
authors.lastname: Jossin
authors.affiliation: Department of Virology, Pasteur Institute, Brussels, Belgium.
authors.forename: Jean
authors.initials: J
authors.lastname: Content
mesh_terms: D018829:Adhesins, Bacterial; D000595:Amino Acid Sequence; D001426:Bacterial Proteins / Q000737:chemistry / Q000235:genetics*; D001483:Base Sequence; D015153:Blotting, Western; D002352:Carrier Proteins / Q000737:chemistry / Q000235:genetics*; D003001:Cloning, Molecular; D017931:DNA Primers / Q000737:chemistry; D004269:DNA, Bacterial / Q000737:chemistry / Q000302:isolation & purification; D004587:Electrophoresis, Agar Gel; D004591:Electrophoresis, Polyacrylamide Gel; D005353:Fibronectins / Q000737:chemistry / Q000378:metabolism*; D006801:Humans; D008089:Listeria monocytogenes / Q000737:chemistry / Q000235:genetics*; D008088:Listeriosis / Q000382:microbiology; D008297:Male; D008875:Middle Aged; D008969:Molecular Sequence Data; D012150:Polymorphism, Restriction Fragment Length; D012329:RNA, Bacterial / Q000737:chemistry / Q000302:isolation & purification; D020133:Reverse Transcriptase Polymerase Chain Reaction; D017422:Sequence Analysis, DNA
chemical_list: D018829:Adhesins, Bacterial; D001426:Bacterial Proteins; D002352:Carrier Proteins; D017931:DNA Primers; D004269:DNA, Bacterial; D005353:Fibronectins; D012329:RNA, Bacterial; C078635:fibronectin-binding proteins, bacterial