title: The class 1 outer membrane protein of Neisseria meningitidis: gene sequence and structural and immunological similarities to gonococcal porins.
abstract: The class 1 protein is a major protein of the outer membrane of Neisseria meningitidis, and an important immunodeterminant in humans. The complete nucleotide sequence for the structural gene of a class 1 protein has been determined. The sequence predicts a protein of 374 amino acids, preceded by a typical signal peptide of 19 residues. The hydropathy profile of the predicted protein sequence resembles that of the Escherichia coli and gonococcal porins. The predicted protein sequence of the class 1 protein exhibits considerable structural similarity to the gonococcal porins PIA and PIB. Western blot studies also reveal immunologically conserved domains between the class 1 protein, PIA and PIB. A restriction fragment from the class 1 gene hybridizes to gonococcal genomic fragments in Southern blots. In addition to the class 1 gene coding region there is a large open reading frame on the opposite strand.
authors.affiliation: Department of Microbiology, University of Southampton Medical School, UK.
authors.forename: A K
authors.initials: AK
authors.lastname: Barlow
authors.forename: J E
authors.initials: JE
authors.lastname: Heckels
authors.forename: I N
authors.initials: IN
authors.lastname: Clarke
mesh_terms: D000595:Amino Acid Sequence; D001425:Bacterial Outer Membrane Proteins / Q000032:analysis* / Q000235:genetics* / Q000276:immunology; D001483:Base Sequence; D003001:Cloning, Molecular; D003429:Cross Reactions; D015342:DNA Probes; D004269:DNA, Bacterial; D005796:Genes; D005798:Genes, Bacterial; D008969:Molecular Sequence Data; D009345:Neisseria meningitidis / Q000235:genetics* / Q000276:immunology; D018272:Porins; D015183:Restriction Mapping
chemical_list: D001425:Bacterial Outer Membrane Proteins; D015342:DNA Probes; D004269:DNA, Bacterial; D018272:Porins; C057699:porin protein, Neisseria