title: Omp52 is a growth-phase-regulated outer membrane protein of Leptospira santarosai serovar Shermani.
abstract: We report the expression and characterization of the omp52 gene of Leptospira santarosai serovar Shermani strain CCF that is isolated in Taiwan. omp52 was identified among pathogenic leptospires but not among non-pathogenic leptospires by using suppression subtractive hybridization in our previous study. With an open reading frame of 1371 bp that encodes 456 amino acids and a predicted molecular mass of 52.6 kDa, Omp52 was shown to be an outer membrane protein containing a C-terminal OmpA consensus domain and exposed on the cell surface. Furthermore, Omp52 increases dramatically during the stationary phase, indicating that the expression of Omp52 is environmentally regulated. By using immunoblotting analysis, we proved that Omp52 was expressed in human patients infected with leptospires. These observations suggest that Omp52 may play roles in the interaction of host cells and pathogens during infection.
authors.affiliation: Graduate Institute of Veterinary Medicine, National Taiwan University, No. 1, Sec. 4, Roosevelt Road, Da-an District, Taipei City 106, Taiwan.
authors.forename: Wang-Ju
authors.initials: WJ
authors.lastname: Hsieh
authors.forename: Yung-Fu
authors.initials: YF
authors.lastname: Chang
authors.forename: Chia-Sui
authors.initials: CS
authors.lastname: Chen
authors.forename: Ming-Jeng
authors.initials: MJ
authors.lastname: Pan
mesh_terms: D000595:Amino Acid Sequence; D001425:Bacterial Outer Membrane Proteins / Q000235:genetics* / Q000276:immunology / Q000378:metabolism*; D015964:Gene Expression Regulation, Bacterial; D006801:Humans; D007106:Immune Sera / Q000276:immunology; D007919:Leptospira / Q000235:genetics / Q000254:growth & development* / Q000276:immunology / Q000378:metabolism; D007922:Leptospirosis / Q000276:immunology / Q000382:microbiology; D008969:Molecular Sequence Data; D011994:Recombinant Proteins / Q000235:genetics / Q000378:metabolism; D017422:Sequence Analysis, DNA
chemical_list: D001425:Bacterial Outer Membrane Proteins; D007106:Immune Sera; D011994:Recombinant Proteins