Crystallization and preliminary X-ray crystallographic analysis of BxlE, a xylobiose transporter from Streptomyces thermoviolaceus OPC-520. 2007

Kiho Seike, and Junji Sato, and Koji Tomoo, and Toshimasa Ishida, and Akihito Yamano, and Sadao Ikenishi, and Katsushiro Miyamoto, and Hiroshi Tsujibo
Department of Physical Chemistry, Osaka University of Pharmaceutical Sciences, Takatsuki, Osaka 569-1094, Japan.

Together with the integral membrane proteins BxlF and BxlG, BxlE isolated from Streptomyces thermoviolaceus OPC-520 forms an ATP-binding cassette (ABC) transport system that mediates the uptake of xylan. To clarify the structural basis of sugar binding by BxlE at the atomic level, recombinant BxlE was crystallized using the hanging-drop vapour-diffusion method at 290 K. The crystals belonged to the monoclinic space group P2(1), with unit-cell parameters a = 44.63, b = 63.27, c = 66.40 A, beta = 103.05 degrees, and contained one 48 kDa molecule per asymmetric unit (V(M) = 1.96 A3 Da(-1)). Diffraction data collected to a resolution of 1.65 A using a rotating-anode X-ray source gave a data set with an overall R(merge) of 2.6% and a completeness of 91.3%. A data set from a platinum derivative is being used for phasing by the SAD method.

UI MeSH Term Description Entries
D003460 Crystallization The formation of crystalline substances from solutions or melts. (McGraw-Hill Dictionary of Scientific and Technical Terms, 4th ed) Crystalline Polymorphs,Polymorphism, Crystallization,Crystal Growth,Polymorphic Crystals,Crystal, Polymorphic,Crystalline Polymorph,Crystallization Polymorphism,Crystallization Polymorphisms,Crystals, Polymorphic,Growth, Crystal,Polymorph, Crystalline,Polymorphic Crystal,Polymorphisms, Crystallization,Polymorphs, Crystalline
D004187 Disaccharides Oligosaccharides containing two monosaccharide units linked by a glycosidic bond. Disaccharide
D001426 Bacterial Proteins Proteins found in any species of bacterium. Bacterial Gene Products,Bacterial Gene Proteins,Gene Products, Bacterial,Bacterial Gene Product,Bacterial Gene Protein,Bacterial Protein,Gene Product, Bacterial,Gene Protein, Bacterial,Gene Proteins, Bacterial,Protein, Bacterial,Proteins, Bacterial
D013302 Streptomyces A genus of bacteria that form a nonfragmented aerial mycelium. Many species have been identified with some being pathogenic. This genus is responsible for producing a majority of the ANTI-BACTERIAL AGENTS of practical value.
D018360 Crystallography, X-Ray The study of crystal structure using X-RAY DIFFRACTION techniques. (McGraw-Hill Dictionary of Scientific and Technical Terms, 4th ed) X-Ray Crystallography,Crystallography, X Ray,Crystallography, Xray,X Ray Crystallography,Xray Crystallography,Crystallographies, X Ray,X Ray Crystallographies
D018528 ATP-Binding Cassette Transporters A family of MEMBRANE TRANSPORT PROTEINS that require ATP hydrolysis for the transport of substrates across membranes. The protein family derives its name from the ATP-binding domain found on the protein. ABC Transporter,ABC Transporters,ATP-Binding Cassette Transporter,ATP Binding Cassette Transporter,ATP Binding Cassette Transporters,Cassette Transporter, ATP-Binding,Transporter, ABC,Transporter, ATP-Binding Cassette,Transporters, ABC,Transporters, ATP-Binding Cassette

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