title: Preliminary crystallographic analysis of the antibiotic discharge outer membrane lipoprotein OprM of Pseudomonas aeruginosa with an exceptionally long unit cell and complex lattice structure.
abstract: Crystals of the drug-discharge outer membrane protein OprM (MW = 50.9 kDa) of the MexAB-OprM multidrug transporter of Pseudomonas aeruginosa have been grown at 293 K in the presence of 2-methyl-2,4-propanediol and a combination of surfactants. The crystal belonged to space group R32, with unit-cell parameters a = b = 85.43, c = 1044.3 A. Diffraction data for OprM were obtained using the undulator synchrotron-radiation beamline at SPring-8 (BL44XU, Osaka University), which allowed an extra-long specimen-to-detector distance with a wide detector area. The crystal diffracted to 2.56 A resolution using 0.9 A X-rays from the synchrotron-radiation source. A heavy-atom derivative for isomorphous replacement phasing was obtained using iridium chloride.
authors.affiliation: Department of Molecular Life Science, Tokai University School of Medicine, Isehara 259-1193, Japan.
authors.forename: Hiroyuki
authors.initials: H
authors.lastname: Akama
authors.forename: Misa
authors.initials: M
authors.lastname: Kanemaki
authors.forename: Tomitake
authors.initials: T
authors.lastname: Tsukihara
authors.forename: Atsushi
authors.initials: A
authors.lastname: Nakagawa
authors.forename: Taiji
authors.initials: T
authors.lastname: Nakae
mesh_terms: D001425:Bacterial Outer Membrane Proteins / Q000737:chemistry* / Q000235:genetics / Q000302:isolation & purification; D003460:Crystallization; D018360:Crystallography, X-Ray; D026901:Membrane Transport Proteins / Q000737:chemistry* / Q000235:genetics / Q000302:isolation & purification; D008958:Models, Molecular; D011550:Pseudomonas aeruginosa / Q000737:chemistry / Q000235:genetics; D017356:Synchrotrons; D014961:X-Ray Diffraction
chemical_list: D001425:Bacterial Outer Membrane Proteins; D026901:Membrane Transport Proteins; C402263:OprM protein, Pseudomonas aeruginosa