title: Molecular characterization of an outer membrane protein of Actinobacillus actinomycetemcomitans belonging to the OmpA family.
abstract: The major outer membrane protein (OMP) of Actinobacillus actinomycetemcomitans is an OmpA homolog that demonstrates electrophoretic heat modifiability. The gene encoding this protein was isolated from a genomic library of A. actinomycetemcomitans NCTC 9710 by immunoscreening with serum from a patient with localized juvenile periodontitis. Expression of the cloned gene in Escherichia coli and subsequent Western blot analysis revealed a protein with an approximate molecular mass of 34 kDa. The amino acid sequence predicted from the cloned gene demonstrated that the mature protein had a molecular mass of 34,911 Da and significant identity to members of the OmpA family of proteins. We have named the major OMP of A. actinomycetemcomitans Omp34, and its corresponding gene has been named omp34.
authors.affiliation: School of Biological Sciences, Macquarie University, Sydney, New South Wales, Australia. pwhite@rna.bio.mq.edu.au
authors.forename: P A
authors.initials: PA
authors.lastname: White
authors.forename: S P
authors.initials: SP
authors.lastname: Nair
authors.forename: M J
authors.initials: MJ
authors.lastname: Kim
authors.forename: M
authors.initials: M
authors.lastname: Wilson
authors.forename: B
authors.initials: B
authors.lastname: Henderson
mesh_terms: D016976:Aggregatibacter actinomycetemcomitans / Q000235:genetics* / Q000276:immunology; D010520:Aggressive Periodontitis / Q000097:blood / Q000276:immunology / Q000382:microbiology; D000595:Amino Acid Sequence; D001425:Bacterial Outer Membrane Proteins / Q000235:genetics* / Q000276:immunology / Q000378:metabolism; D001483:Base Sequence; D015153:Blotting, Western; D003001:Cloning, Molecular; D004926:Escherichia coli / Q000235:genetics / Q000378:metabolism; D029968:Escherichia coli Proteins; D015870:Gene Expression; D015723:Gene Library; D006801:Humans; D008969:Molecular Sequence Data; D010957:Plasmids; D015183:Restriction Mapping; D016415:Sequence Alignment; D017422:Sequence Analysis, DNA; D017386:Sequence Homology, Amino Acid
chemical_list: D001425:Bacterial Outer Membrane Proteins; D029968:Escherichia coli Proteins; C078167:OMPA outer membrane proteins