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  • 1
    Electronic Resource
    Electronic Resource
    New York, NY : Wiley-Blackwell
    Proteins: Structure, Function, and Genetics 2 (1987), S. 167-176 
    ISSN: 0887-3585
    Keywords: icosahedral ; insect ; virus ; structure ; evolution ; nodavirus ; Chemistry ; Biochemistry and Biotechnology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Medicine
    Notes: We report the first atomic resolution structure of an insect virus determined by single crystal X-ray diffraction. Black beetle virus has a bipartite RNA genome encapsulated in a single particle. The capsid contains 180 protomers arranged on a T = 3 surface lattice. The quaternary organization of the protomers is similar to that observed in the T = 3 plant virus structures. The protomers consist of a basic, crystallographically disordered amino terminus (64 residues), a β-barrel as seen in other animal and plant virus subunits, an outer protrusion composed predominantly of β-sheet and formed by three large insertions between strands of the barrel, and a carboxy terminal domain composed of two distorted helices lying inside the shell. The outer surfaces of quasi-threefold related protomers form trigonal pyramidyl protrusions. A cleavage site, located 44 residues from the carboxy terminus, lies within the central cavity of the protein shell.The structural motif observed in BBV (a shell composed of 180 eight-stranded antiparallel β-barrels) is common to all nonstatellite spherical viruses whose structures have so far been solved. This highly conserved shell architecture suggests a common origin for the coat protein of spherical viruses, while the primitive genome structure of BBV suggests that this insect virus represents an early stage in the evolution of spherical viruses from cellular genes.
    Additional Material: 6 Ill.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 185 (1929), S. 107-129 
    ISSN: 0863-1786
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Additional Material: 6 Ill.
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    New York, NY : Wiley-Blackwell
    International Journal of Quantum Chemistry 65 (1997), S. 941-946 
    ISSN: 0020-7608
    Keywords: Chemistry ; Theoretical, Physical and Computational Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Using a molecular cluster with 71 atoms, we studied the electronic and structural properties of nitrogen vacancy, boron antisite, and oxygen in cubic boron nitride through an ab initio Hartree-Fock calculation. We found that all defects introduce a deep state above the middle-energy gap. These defects present a C3v local symmetry. In the case of nitrogen vacancy, the possibility of the F-center formation is discussed. All the calculations were performed using the program code GAMESS.   © 1997 John Wiley & Sons, Inc. Int J Quant Chem 65: 941-946, 1997
    Additional Material: 6 Ill.
    Type of Medium: Electronic Resource
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  • 4
    ISSN: 0044-2313
    Keywords: Transition metal substituted phosphaalkenes ; isophosphaalkyne complex ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Transition Metal Substituted Acylphosphanes and Phosphaalkenes. 17. Synthesis and Structure of the μ-Isophosphaalkyne Complexes [(η5-C5H5)2(CO)2Fe2(μ-CO)(μ-C=PC6H2R3)] (R = Me, iPr, tBu).Condensation of (η5-C5H5)2(CO)2Fe2(μ-CO)(μ-CSMe)}+SO3CF3- (6) with 2,4,6-R3C6H2PH(SiMe3) (7) (a: R = Me, b: R = iPr, c: R = tBu) affords the complexes (η5-C5H5)2(CO)2Fe2(μ-CO)(η-C=PC6H2R3-2,4,6) (9 a-c) with edge-bridging isophosphaalkyne ligands as confirmed by the x-ray structure analysis of 9 a.
    Notes: Die Kondensation des μ-Carbinkomplexes {(η5-C5H5)2(CO)2Fe2(μ-CO)(μ-CSMe)}+SO3CF3- (6) mit den Phosphanen 2,4,6-R3C6H2PH(SiMe3) (7) (a: R = Me, b: R = iPr, c: R = tBu) liefert die Komplexe (η5-C5H5)2(CO)2Fe2(μ-CO)(η-C=PC6H2R3-2,4,6) 9a-c, die die neuartigen Isophosphaalkine C≡P-Aryl als Brückenliganden tragen. Von 9 a wurde eine Röntgenstrukturanalyse durchgeführt.
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
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