title: Molecular cloning and characterization of the oprQ gene coding for outer membrane protein OprE3 of Pseudomonas aeruginosa.
abstract: We cloned and characterized the oprQ gene coding for outer membrane protein OprE3 of Pseudomonas aeruginosa PAO1. The oprQ gene was composed of 1,275 base pairs including a sequence encoding for the signal sequence and a mature protein with a Mr of 44,602. Computer-aided alignment and hydropathy analyses of the predicted amino acid sequences suggested that OprE3 is a transmembrane protein homologous to outer membrane proteins of P. aeruginosa such as OprD2 (OprD) porin and OprE1 (OprE) porin. Susceptibility to several antibiotics of the strains lacking or overproducing OprE3 was indistinguishable from that of the wild-type strain, suggesting that OprE3 is unlikely involved in the diffusion of carbapenems and other beta-lactam antibiotics.
authors.affiliation: Department of Microbiology, Kyoto Pharmaceutical University, Yamashina, Japan.
authors.forename: K
authors.initials: K
authors.lastname: Okamoto
authors.forename: N
authors.initials: N
authors.lastname: Gotoh
authors.forename: H
authors.initials: H
authors.lastname: Tsujimoto
authors.forename: H
authors.initials: H
authors.lastname: Yamada
authors.forename: E
authors.initials: E
authors.lastname: Yoshihara
authors.forename: T
authors.initials: T
authors.lastname: Nakae
authors.forename: T
authors.initials: T
authors.lastname: Nishino
mesh_terms: D000595:Amino Acid Sequence; D000900:Anti-Bacterial Agents / Q000494:pharmacology; D001425:Bacterial Outer Membrane Proteins; D003001:Cloning, Molecular; D004269:DNA, Bacterial / Q000032:analysis; D005798:Genes, Bacterial; D008826:Microbial Sensitivity Tests; D008969:Molecular Sequence Data; D018272:Porins / Q000235:genetics* / Q000378:metabolism; D011550:Pseudomonas aeruginosa / Q000187:drug effects / Q000235:genetics*; D017422:Sequence Analysis, DNA
chemical_list: D000900:Anti-Bacterial Agents; D001425:Bacterial Outer Membrane Proteins; D004269:DNA, Bacterial; D018272:Porins; C120880:oprQ protein, Pseudomonas aeruginosa