title: Structure determination of LpxD from the lipopolysaccharide-synthesis pathway of Acinetobacter baumannii.
abstract: Acinetobacter baumannii is a Gram-negative bacterium that is resistant to many currently available antibiotics. The protein LpxD is a component of the biosynthetic pathway for lipopolysaccharides in the outer membrane of this bacterium and is a potential target for new antibacterial agents. This paper describes the structure determination of apo forms of LpxD in space groups P2(1) and P4(3)22. These crystals contained six and three copies of the protein molecule in the asymmetric unit and diffracted to 2.8 and 2.7 Å resolution, respectively. A comparison of the multiple protein copies in the asymmetric units of these crystals reveals a common protein conformation and a conformation in which the relative orientation between the two major domains in the protein is altered.
authors.affiliation: Zenobia Therapeutics Inc., 505 Coast Boulevard South, Suite 111, La Jolla, CA 92037, USA. john@zenobiatherapeutics.com
authors.forename: John
authors.initials: J
authors.lastname: Badger
authors.forename: Barbara
authors.initials: B
authors.lastname: Chie-Leon
authors.forename: Cheyenne
authors.initials: C
authors.lastname: Logan
authors.forename: Vandana
authors.initials: V
authors.lastname: Sridhar
authors.forename: Banumathi
authors.initials: B
authors.lastname: Sankaran
authors.forename: Peter H
authors.initials: PH
authors.lastname: Zwart
authors.forename: Vicki
authors.initials: V
authors.lastname: Nienaber
mesh_terms: D040981:Acinetobacter baumannii / Q000737:chemistry*; D001426:Bacterial Proteins / Q000737:chemistry* / Q000235:genetics / Q000378:metabolism; D001665:Binding Sites; D018360:Crystallography, X-Ray; D008958:Models, Molecular; D011487:Protein Conformation; D017434:Protein Structure, Tertiary
chemical_list: D001426:Bacterial Proteins