Cutting Edge: Outer Membrane Protein A (OmpA) Binds to and Activates Human Macrophages

Macrophages (OmpA) Binds to and Activates Human Cutting Edge: Outer Membrane Protein A

Study of the immunogenicity of outer membrane protein A (ompA) gene from Acinetobacter baumannii as DNA vaccine candidate in vivo

Objective(s): Acinetobacter baumannii is one the most dangerous opportunistic pathogens in hospitalized infections. This bacterium is resistant to 90% of commercial antibiotics. Therefore, developing new strategies to cure A. baumannii-infections is urgent. The DNA vaccines new approach in which the immunogen can be directly expressed inside the target cells through cl...

Pseudomonas aeruginosa outer membrane protein F: structural role and relationship to the Escherichia coli OmpA protein.

A Pseudomonas aeruginosa outer membrane protein F-deficient omega-insertion mutant strain H636, in contrast to its protein F-sufficient parent strain H103, was unable to grow on unsupplemented Proteose Peptone no. 2 broth (Difco Laboratories, Detroit, Mich.). Addition of high concentrations of NaCl, KCl, glucose, sucrose, or potassium succinate permitted growth of strain H636 at rates approachi...

Human complement factor H binds to outer membrane protein Rck of Salmonella.

Serum resistance, or resistance to complement-mediated killing, is a key virulence property of microbial pathogens. Rck is a 17-kDa outer membrane protein encoded on the virulence plasmid of Salmonella enterica serovars Typhimurium and Enteritidis. When expressed in either Escherichia coli or S. enterica Typhimurium, Rck confers serum resistance independent of LPS length. Recently, the Rck homo...

Membrane assembly of the outer membrane protein OmpA of Escherichia coli.

The membrane part (residues 1 to approximately 170) of the 325-residue Escherichia coli outer membrane protein OmpA is thought to exist in the membrane as an 8-stranded beta-barrel, subdividing this part into four segments. The influence of proline residues on membrane assembly of the protein has been studied. These were introduced, using site-directed mutagenesis, into each of seven of the ant...