The Experts below are selected from a list of 255 Experts worldwide ranked by ideXlab platform
Francisco J. Medrano - One of the best experts on this subject based on the ideXlab platform.
-
Crystallization and preliminary X‐ray diffraction analysis of XAC1151, a small heat‐shock protein from Xanthomonas axonopodis pv. citri belonging to the α‐crystallin family
Acta Crystallographica Section F Structural Biology and Crystallization Communications, 2006Co-Authors: Eduardo Hilario, Elaine Cristina Teixeira, Gisele Audrei Pedroso, Maria Célia Bertolini, Francisco J. MedranoAbstract:The hspA gene (XAC1151) from Xanthomonas axonopodis pv. citri encodes a protein of 158 amino acids that belongs to the small heat-shock protein (sHSP) family of proteins. These proteins function as molecular chaperones by preventing protein aggregation. The protein was crystallized using the sitting-drop vapour-diffusion method in the presence of ammonium phosphate. X-ray diffraction data were collected to 1.65 A resolution using a synchrotron-radiation source. The crystal belongs to the Rhombohedral Space Group R3, with unit-cell parameters a = b = 128.7, c = 55.3 A. The crystal structure was solved by molecular-replacement methods. Structure refinement is in progress.
-
Crystallization and preliminary X-ray diffraction analysis of XAC1151, a small heat-shock protein from Xanthomonas axonopodis pv. citri belonging to the alpha-crystallin family.
Acta crystallographica. Section F Structural biology and crystallization communications, 2006Co-Authors: Eduardo Hilario, Elaine Cristina Teixeira, Gisele Audrei Pedroso, Maria Célia Bertolini, Francisco J. MedranoAbstract:The hspA gene (XAC1151) from Xanthomonas axonopodis pv. citri encodes a protein of 158 amino acids that belongs to the small heat-shock protein (sHSP) family of proteins. These proteins function as molecular chaperones by preventing protein aggregation. The protein was crystallized using the sitting-drop vapour-diffusion method in the presence of ammonium phosphate. X-ray diffraction data were collected to 1.65 angstroms resolution using a synchrotron-radiation source. The crystal belongs to the Rhombohedral Space Group R3, with unit-cell parameters a = b = 128.7, c = 55.3 angstroms. The crystal structure was solved by molecular-replacement methods. Structure refinement is in progress.
Jim D. Atwood - One of the best experts on this subject based on the ideXlab platform.
-
Displacement of hard bases from a soft center by a soft ligand: reaction of Ir(CO)(OH)(SO4)L2 (L = PPh3, P(p-tolyl)3) with carbon monoxide and the crystal structure of [Ir(CO)3(PPh3)2+][HSO4-].cntdot.1/3H2O
Organometallics, 1991Co-Authors: Sherri L. Randall, Jeffrey S. Thompson, Lisa A. Buttrey, Joseph W. Ziller, Melvyn Rowen Churchill, Jim D. AtwoodAbstract:The iridium(III) complexes Ir(CO)(OH)(SO 4 )L 2 , L=PPh 3 , P(p-tolyl) 3 , have been prepared and shown to react with CO, yielding the iridium(I) species [Ir(CO) 3 L 2 + ][HSO 4 − ] (L=PPh 3 , P(p-tolyl) 3 ) and CO 2 . The species [Ir(CO) 3 (PPh 3 ) 2 + ][HSO 4 − ]•1/3H 2 O crystallizes in the centrosymmetric Rhombohedral Space Group R 3
Joël Janin - One of the best experts on this subject based on the ideXlab platform.
-
Crystallization and preliminary X-ray diffraction studies of the human erythrocyte bisphosphoglycerate mutase.
Journal of molecular biology, 1991Co-Authors: Jacqueline Cherfils, Raymonde Rosa, M.c. Garel, Marie-claude Calvin, Jean Rosa, Joël JaninAbstract:Bisphosphoglycerate mutase (EC 2.7.5.4) catalyzes the synthesis and breakdown of 2,3-diphosphoglycerate in red cells. The human enzyme, cloned and expressed in Escherichia coli has been crystallized in the Rhombohedral Space Group R32 with a = b = c = 100.4 A and alpha = beta = gamma = 81.2 degrees. The asymmetric unit contains either a dimeric enzyme molecule, or a monomer.
V. Manivannan - One of the best experts on this subject based on the ideXlab platform.
-
Synthesis, and study of magnetic properties, of Bi1−xCdxFeO3
Journal of Materials Science, 2010Co-Authors: M. B. Bellakki, V. ManivannanAbstract:Ceramic Bi1−xCdxFeO3 (x = 0.0, 0.05, and 0.1) samples were prepared by a citrate-gel method. The as-prepared compounds were calcined at 600 °C for 3 h to obtain nearly single-phase materials. The crystal structure, examined by X-ray powder diffraction (XRD) and Rietveld analysis, confirmed that the samples crystallize in a Rhombohedral (Space Group, R-3c no. 161) structure. Magnetic measurements were carried out on the resultant powders from 300 to ~2.5 K. Magnetic hysteresis loops showed a significant increase in magnetization as a result of Cd doping in BiFeO3.
-
Citrate-gel synthesis and characterization of yttrium-doped multiferroic BiFeO_3
Journal of Sol-Gel Science and Technology, 2010Co-Authors: M. B. Bellakki, V. ManivannanAbstract:Perovskite Bi_1− x Y_ x FeO_3 (0.0 ≤ x ≤ 0.1) oxides were prepared by a citrate-gel method. The crystal structure examined by X-ray powder diffraction indicates that the samples were single-phase and crystallize in a Rhombohedral (Space Group, R-3c no. 161) structure. The structural phase transition from Rhombohedral to orthorhombic phase was observed at x = 0.10. Increase in magnetization was observed as a result of Y doping. The optical band-gap of (Bi, Y)FeO_3 materials were determined. The observed increase in magnetization and low band-gap of (Bi, Y)FeO_3 ceramics position them for potential magenotoelectric and photocatalytic applications, respectively.
-
CITRATE-GEL SYNTHESIS AND CHARACTERIZATION OF YTTRIUM-DOPED MULTIFERROIC BIFEO3
Journal of Sol-Gel Science and Technology, 2009Co-Authors: M. B. Bellakki, V. ManivannanAbstract:Perovskite Bi1−x Y x FeO3 (0.0 ≤ x ≤ 0.1) oxides were prepared by a citrate-gel method. The crystal structure examined by X-ray powder diffraction indicates that the samples were single-phase and crystallize in a Rhombohedral (Space Group, R-3c no. 161) structure. The structural phase transition from Rhombohedral to orthorhombic phase was observed at x = 0.10. Increase in magnetization was observed as a result of Y doping. The optical band-gap of (Bi, Y)FeO3 materials were determined. The observed increase in magnetization and low band-gap of (Bi, Y)FeO3 ceramics position them for potential magenotoelectric and photocatalytic applications, respectively.
-
Synthesis and magnetic properties of BiFeO3 and Bi0.98Y0.02FeO3
Materials Chemistry and Physics, 2009Co-Authors: M. B. Bellakki, V. Manivannan, C. Madhu, A. SundaresanAbstract:Abstract Multiferroic BiFeO 3 and Bi 0.98 Y 0.02 FeO 3 samples were prepared by a solution combustion method using oxalyldihydrazide (ODH) as a fuel. The as-prepared compounds were annealed at 600 °C for 3 h to obtain single-phase materials. The crystal structure examined by X-ray powder diffraction (XRD) indicates that the samples were of single phase and crystallize in a Rhombohedral (Space Group, R -3 c no.161) structure. Magnetic measurements were carried out on the resultant powders from 300 to ∼0 K. A significant increase in magnetization was observed for Y-doped BiFeO 3 .
Hans-conrad Zur Loye - One of the best experts on this subject based on the ideXlab platform.
-
A family of rare earth uranium oxides, RE6UO12-δ, (RE = Rare Earth). Synthesis, structure and magnetic behavior
Journal of Solid State Chemistry, 2018Co-Authors: Mohammad Usman, Justin B. Felder, Gregory Morrison, Hans-conrad Zur LoyeAbstract:Abstract A series of rare earth uranates, RE6UO12-δ (RE = La, Nd, Sm – Dy, Er and Yb), were synthesized via the solid state method and their structures were determined using the Rietveld method. These compounds crystallize in the Rhombohedral Space Group R-3H with the lattice parameters a = 10.47005(3) A and c = 9.98034(3) A for the La analogue. The temperature and field dependent magnetization are reported for each analogue. Antiferromagnetic ordering is observed for RE = Gd, Tb, and Dy with Neel temperatures of 2.1 K, 5.8 K, and 2.8 K, respectively. Magnetic measurements on the La6UO12 analogue indicate the presence of some U5+, and therefore, oxygen vacancies in the structure. The variability of the U valence is examined.
-
Ln(14)Na(3)Ru(6)O(36) (ln = pr, nd): two new complex lanthanide-containing oxides of ruthenium.
Inorganic chemistry, 2007Co-Authors: William R. Gemmill, Mark D. Smith, Hans-conrad Zur LoyeAbstract:The lanthanide-containing ruthenium oxides Ln14Na3Ru6O36 (Ln = Pr, Nd) were prepared as single crystals from molten sodium hydroxide. The two compounds crystallize in the Rhombohedral Space Group R...