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  • 1
    Digitale Medien
    Digitale Medien
    Optical cell for the study of biological systems under high gas pressures (1995)
    [S.l.] : American Institute of Physics (AIP)
    Review of Scientific Instruments 66 (1995), S. 3311-3316 
    Details
    ISSN: 1089-7623
    Quelle: AIP Digital Archive
    Thema: Physik , Elektrotechnik, Elektronik, Nachrichtentechnik
    Notizen: A high-pressure system incorporating an optical cell and suitable for the study of aqueous biological systems is described. The high-pressure system can be assembled from commercially available components. Using the system gas pressures up to 70 MPa of various gases can be generated from pressures available in the laboratory and maintained over samples for extended periods of time. Preliminary optical measurements on aqueous solutions incubated with nitrogen or methane gas pressures have indicated that there is a gas-specific interaction between the solution and the gas. Biological membranes and their components are modified by the aqueous solutions incubated against high-pressure methane whereas nitrogen incubated solutions do not show comparable effects. Some of the observed modifications are irreversible whereas others are reversible when pressure is reduced. © 1995 American Institute of Physics.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1063/1.1146497
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  • 2
    Digitale Medien
    Digitale Medien
    Magnetically Oriented Solutions of Filamentous Bacteriophages Studied by X-ray Diffraction (1986)
    Oxford, UK : Blackwell Publishing Ltd
    Annals of the New York Academy of Sciences 463 (1986), S. 0 
    Details
    ISSN: 1749-6632
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Allgemeine Naturwissenschaft
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1111/j.1749-6632.1986.tb21603.x
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  • 3
    Digitale Medien
    Digitale Medien
    Mullin, Robert Bruce: The Puritan as Yankee: A Life of Horace Bushnell : Grand Rapids, Mich., William B. Eerdmans, 2002 (2005)
    New York : Cambridge University Press
    Church history 74 (2005), S. 398-399 
    Details
    ISSN: 0009-6407
    Quelle: Cambridge Journals Digital Archives
    Thema: Geschichte , Theologie und Religionswissenschaft
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1017/S000964070011056X
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  • 4
    Digitale Medien
    Digitale Medien
    Taxol found on tubulin (1995)
    [s.l.] : Nature Publishing Group
    Nature 375 (1995), S. 361-362 
    Details
    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] TEN years ago the best electron microscope images of globular proteins were virtually all little more than shapeless blobs. These days, as a consequence of relentless technical advance, electron crystallography is capable of producing images at resolutions close to ...
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1038/375361a0
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  • 5
    Digitale Medien
    Digitale Medien
    The likelihood function in fiber diffraction (2000)
    [S.l.] : International Union of Crystallography (IUCr)
    Acta crystallographica 56 (2000), S. 168-177 
    Details
    ISSN: 1600-5724
    Quelle: Crystallography Journals Online : IUCR Backfile Archive 1948-2001
    Thema: Chemie und Pharmazie , Geologie und Paläontologie , Physik
    Notizen: The likelihood function is an appropriate target function for refinement of molecular structures using fiber diffraction data. However, its practical application to fiber diffraction faces two significant obstacles: (i) the intensities of layer lines in a fiber diffraction pattern usually arise from the superposition of several terms, each equivalent to a crystallographic structure factor, thereby making the calculation significantly more complex than for the crystallographic case; (ii) to describe a molecular structure at the atomic level based on fiber diffraction data, the radial and phase parts of the atomic coordinates must be treated separately owing to the uniaxial symmetry of the structure. These issues are addressed here in order to derive equations of likelihood functions for fiber diffraction. The special case of a single term on a layer line is treated first followed by extension of the method to the multiterm case. A practical difficulty in implementation of likelihood for the multiterm case is that each term has a different variance. An analytical technique is described that allows the conversion of the unequal-variance case to an equal-variance case. This makes it possible to express the likelihood by an explicit formula, allowing a direct implementation of the likelihood calculation. A cylindrically symmetric model is proposed for error distribution of the atomic coordinates in a helical structure. Variances and offset coefficients of the contributing terms in the likelihood functions are expressed in terms of the variance of the atomic coordinates in the cylindrical reference system.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1107/S0108767399015421
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  • 6
    Digitale Medien
    Digitale Medien
    Structural polymorphism of bacterial adhesion pili (1995)
    [s.l.] : Nature Publishing Group
    Nature 373 (1995), S. 164-167 
    Details
    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] Electron micrographs of negatively stained P-pili from Escher-ichia coli (Fig. la) indicate that the pili are relatively rigid, rod-like structures. Figure \b contains a power spectrum (square of the Fourier transform) of a micrograph of a negatively stained pilus. The sharp layer lines visible ...
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1038/373164a0
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  • 7
    Digitale Medien
    Digitale Medien
    Shuffling of structural elements in filamentous bacteriophages (1997)
    New York, NY : Wiley-Blackwell
    Proteins: Structure, Function, and Genetics 27 (1997), S. 405-409 
    Details
    ISSN: 0887-3585
    Schlagwort(e): class II filamentous bacteriophages ; Chemistry ; Biochemistry and Biotechnology
    Quelle: Wiley InterScience Backfile Collection 1832-2000
    Thema: Medizin
    Notizen: All class II filamentous bacteriophage coat proteins contain a conserved, 12-amino acid sequence highly homologous to the loop portion of the EF-hand Ca2+-binding motif. The Pf3 coat protein contains two regions of homology to this sequence. The 12-amino acid sequence corresponds to a region of the Pf1 coat protein whose structure is controversial. In some models of the virus structure, this region is α-helical. In others, it forms a loop that folds back on itself. The similarity of this region to the loop in the helix-loop-helix Ca2+-binding motif suggests that it takes on a loop structure in the virion. Each filamentous phage lacks at least one residue normally involved in Ca2+-coordination, consistent with the relatively weak Ca2+ binding properties of the filamentous phages. Consideration of the structure of the coat protein in the membrane and in the virus particle indicates that the protein may be more effective in binding cations in its membrane-bound form than in the virus particle. This suggests that release of cations from this loop may be an obligate step during assembly of the proteins into the virus particle. Proteins 27:405-409, 1997. © 1997 Wiley-Liss, Inc.
    Zusätzliches Material: 3 Ill.
    Materialart: Digitale Medien
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  • 8
    Digitale Medien
    Digitale Medien
    Don Caspar, TMV, and protein-protein interactions (1998)
    New York, NY : Wiley-Blackwell
    Proteins: Structure, Function, and Genetics 30 (1998), S. 109-112 
    Details
    ISSN: 0887-3585
    Schlagwort(e): Chemistry ; Biochemistry and Biotechnology
    Quelle: Wiley InterScience Backfile Collection 1832-2000
    Thema: Medizin
    Notizen: No abstract.
    Zusätzliches Material: 2 Ill.
    Materialart: Digitale Medien
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