title: Molecular cloning and expression of Chlamydia trachomatis major outer membrane protein antigens in Escherichia coli.
abstract: DNA obtained from Chlamydia trachomatis (serovar L2) was partially digested with DNase I and inserted into the beta-galactosidase gene of bacteriophage lambda gt11. Seven recombinants were selected that produced immunoreactive fusion proteins which were detected with anti-C. trachomatis rabbit serum. One recombinant, designated lambda gt11/L2/33, reacted with various monoclonal antibodies that recognize species-, subspecies-, and type-specific determinants on the chlamydial major outer membrane protein (MOMP). Immunoblot analysis of a lambda gt11/L2/33 lysogen revealed a fusion protein that expressed a approximately 15,000-dalton carboxyl-terminal peptide of the chlamydial MOMP. This moiety of the MOMP possesses epitopes responsible for each of the unique reactivities demonstrated by anti-MOMP monoclonal antibodies. The lambda gt11/L2/33 recombinant contained a 1.1-kilobase DNA insert which hybridized to DNA isolated from each of the 15 C. trachomatis serovars.
mesh_terms: D000911:Antibodies, Monoclonal; D000942:Antigens, Bacterial / Q000235:genetics*; D001425:Bacterial Outer Membrane Proteins / Q000235:genetics*; D002692:Chlamydia trachomatis / Q000235:genetics*; D003001:Cloning, Molecular; D004269:DNA, Bacterial / Q000235:genetics; D004926:Escherichia coli / Q000235:genetics; D008970:Molecular Weight; D013045:Species Specificity
chemical_list: D000911:Antibodies, Monoclonal; D000942:Antigens, Bacterial; D001425:Bacterial Outer Membrane Proteins; D004269:DNA, Bacterial