The Experts below are selected from a list of 276 Experts worldwide ranked by ideXlab platform
Bernard Lorber - One of the best experts on this subject based on the ideXlab platform.
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structure of thaumatin in a Hexagonal Space Group comparison of packing contacts in four crystal lattices
Acta Crystallographica Section D-biological Crystallography, 2004Co-Authors: C Charron, Richard Giege, Bernard LorberAbstract:The intensely sweet protein thaumatin has been crystallized in a Hexagonal lattice after a temperature shift from 293 to 277 K. The structure of the protein in the new crystal was solved at 1.6 A resolution. The protein fold is identical to that found in three other crystal forms grown in the presence of crystallizing agents of differing chemical natures. The proportions of lattice interactions involving hydrogen bonds, hydrophobic or ionic Groups differ greatly from one form to another. Moreover, the distribution of acidic and basic residues taking part in contacts also varies. The Hexagonal packing is characterized by the presence of channels parallel to the c axis that are so wide that protein molecules can diffuse through them.
C Charron - One of the best experts on this subject based on the ideXlab platform.
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structure of thaumatin in a Hexagonal Space Group comparison of packing contacts in four crystal lattices
Acta Crystallographica Section D-biological Crystallography, 2004Co-Authors: C Charron, Richard Giege, Bernard LorberAbstract:The intensely sweet protein thaumatin has been crystallized in a Hexagonal lattice after a temperature shift from 293 to 277 K. The structure of the protein in the new crystal was solved at 1.6 A resolution. The protein fold is identical to that found in three other crystal forms grown in the presence of crystallizing agents of differing chemical natures. The proportions of lattice interactions involving hydrogen bonds, hydrophobic or ionic Groups differ greatly from one form to another. Moreover, the distribution of acidic and basic residues taking part in contacts also varies. The Hexagonal packing is characterized by the presence of channels parallel to the c axis that are so wide that protein molecules can diffuse through them.
Richard Giege - One of the best experts on this subject based on the ideXlab platform.
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structure of thaumatin in a Hexagonal Space Group comparison of packing contacts in four crystal lattices
Acta Crystallographica Section D-biological Crystallography, 2004Co-Authors: C Charron, Richard Giege, Bernard LorberAbstract:The intensely sweet protein thaumatin has been crystallized in a Hexagonal lattice after a temperature shift from 293 to 277 K. The structure of the protein in the new crystal was solved at 1.6 A resolution. The protein fold is identical to that found in three other crystal forms grown in the presence of crystallizing agents of differing chemical natures. The proportions of lattice interactions involving hydrogen bonds, hydrophobic or ionic Groups differ greatly from one form to another. Moreover, the distribution of acidic and basic residues taking part in contacts also varies. The Hexagonal packing is characterized by the presence of channels parallel to the c axis that are so wide that protein molecules can diffuse through them.
X. L. Chen - One of the best experts on this subject based on the ideXlab platform.
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Ab initio structure determination of new compound Ba3(BO 3)(PO4)
Journal of Solid State Chemistry, 2004Co-Authors: H. W. Ma, G. H. Rao, G.y. Liu, Lingfeng Wu, J.k. Liang, X. L. ChenAbstract:The crystal structure of new compound Ba3BPO7 was determined by ab initio method from high-resolution conventional X-ray powder diffraction data. The Rietveld refinement converged to Rp=5.92%, Rwp=8.87%, Rexp=5.00% with the following details: Hexagonal, Space Group P63mc, a=5.4898 (1)Å, c=14.7551(1)Å, Z=2. The basic unit of the structure is the [BaO 10]-[BO3]-[PO4] polar polyhedra-chain composed of Ba1-B-P-O cluster. These chains, running along c-axis, stack in a HCP mode to build the whole structure with triangular prism channels. The channels are parallel to c-axis too, in which Ba2 and Ba3 are located. © 2004 Elsevier Inc. All rights reserved.
John F. Valliant - One of the best experts on this subject based on the ideXlab platform.
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Sterically hindered and robust pnictogen ligands derived from carboranes: synthesis and X-ray structure determination of tris(1'-methyl(1,2-dicarba-closo-dodecaboran-1-yl))phosphine, tris(1'-methyl(1,2-dicarba-closo-dodecaboran-1-yl))arsine and chlor
Inorganic Chemistry, 2004Co-Authors: Arienne S. King, George Ferguson, James F. Britten, John F. ValliantAbstract:Sterically hindered phosphine and arsine ligands derived from ortho-carborane were synthesized and characterized by X-ray crystallography. Tris(1‘-methyl(1,2-dicarba-closo-dodecaboran-1-yl))phosphine, 2 (crystal data, Hexagonal, Space Group P63, a = b = 12.251(3) A, c = 11.514(4) A, α = β = 90°, γ = 120°, V = 1496.6(7) A3, Z = 2, R1 = 0.0568) and tris(1‘-methyl(1,2-dicarba-closo-dodecaboran-1-yl))arsine, 3 (crystal data, Hexagonal, Space Group P63, a = b = 12.330(3) A, c = 11.474(4) A, α = β = 90°, γ = 120°, V = 1510.7(7) A3, Z = 2, R1 = 0.0930) were prepared in 82% and 68% yield, respectively. The phosphine ligand is resistant to air-oxidation but was converted to corresponding oxide when heated with hydrogen peroxide. The tertiary carboranyl phosphine reacted with (Tht)AuCl to yield chloro(tris(1‘-methyl(1,2-dicarba-closo-dodecaboran-1-yl))phosphine)gold(I), 4 (crystal data, monoclinic, Space Group P21/c, a = 19.101(4) A, b = 12.167(2) A, c = 13.846(3) A, α = γ = 90°, β = 91.13(3)°, V = 3217.2(11) A3, Z...