title: Expression, refolding, crystallization and preliminary X-ray analysis of Pseudomonas aeruginosa AlgE.
abstract: AlgE is an outer membrane protein present in alginate-producing (mucoid) Pseudomonas aeruginosa. AlgE has been overexpressed in insoluble inclusion bodies, purified under denaturing conditions and refolded in a buffer containing decyl beta-D-maltopyranoside. Purified refolded AlgE was detergent-exchanged into n-octyl tetraoxyethylene and diffraction-quality crystals were grown using the hanging-drop vapor-diffusion method. The crystals grew as small hexagons with unit-cell parameters a = 98.8, b = 156.8, c = 90.4 A, alpha = beta = gamma = 90.0 degrees . The crystals exhibited the symmetry of space group C222 and diffracted to a minimum d-spacing of 3.0 A. On the basis of the Matthews coefficient (V(M) = 3.28 A(3) Da(-1)), one molecule is estimated to be present in the asymmetric unit.
authors.affiliation: Research Institute, Hospital for Sick Children, Toronto, Ontario, Canada.
authors.forename: John C C
authors.initials: JC
authors.lastname: Whitney
authors.forename: A Mirela
authors.initials: AM
authors.lastname: Neculai
authors.forename: Dennis E
authors.initials: DE
authors.lastname: Ohman
authors.forename: P Lynne
authors.initials: PL
authors.lastname: Howell
mesh_terms: D000464:Alginates; D001426:Bacterial Proteins / Q000032:analysis / Q000737:chemistry* / Q000235:genetics / Q000378:metabolism*; D003460:Crystallization; D018360:Crystallography, X-Ray; D015870:Gene Expression; D020723:Glucuronic Acid / Q000096:biosynthesis; D006603:Hexuronic Acids; D017510:Protein Folding; D011550:Pseudomonas aeruginosa / Q000737:chemistry* / Q000235:genetics / Q000378:metabolism*
chemical_list: D000464:Alginates; D001426:Bacterial Proteins; D006603:Hexuronic Acids; D020723:Glucuronic Acid