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  • 1
    Electronic Resource
    Electronic Resource
    Palo Alto, Calif. : Annual Reviews
    Annual Review of Physiology 43 (1981), S. 553-565 
    ISSN: 0066-4278
    Source: Annual Reviews Electronic Back Volume Collection 1932-2001ff
    Topics: Medicine , Biology
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Palo Alto, Calif. : Annual Reviews
    Annual Review of Biochemistry 68 (1999), S. 687-728 
    ISSN: 0066-4154
    Source: Annual Reviews Electronic Back Volume Collection 1932-2001ff
    Topics: Chemistry and Pharmacology , Biology
    Notes: Abstract X-ray crystallography shows the myosin cross-bridge to exist in two conformations, the beginning and end of the "power stroke." A long lever-arm undergoes a 60o to 70o rotation between the two states. This rotation is coupled with changes in the active site (OPEN to CLOSED) and phosphate release. Actin binding mediates the transition from CLOSED to OPEN. Kinetics shows that the binding of myosin to actin is a two-step process which affects ATP and ADP affinity. The structural basis of these effects is not explained by the presently known conformers of myosin. Therefore, other states of the myosin cross-bridge must exist. Moreover, cryoelectronmicroscopy has revealed other angles of the cross-bridge lever arm induced by ADP binding. These structural states are presently being characterized by site-directed mutagenesis coupled with kinetic analysis.
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 273 (1978), S. 564-566 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Fig. 1 JH NMR spectra of TMV coat protein at 360 MHz. Protein concentration 10 mg ml"1 in phosphate buffer F/2 = 0.1, temperature 27 C, pH as indicated, a, 4S particle, pH 8.5; b, disk (19-22S), pH 7.1; c, helix (〉 30S), pH 6.0. Chemical shifts (5) in p.p.m. from internal DSS. AR = Aromatic ...
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    Springer
    Journal of molecular medicine 53 (1975), S. 997-1005 
    ISSN: 1432-1440
    Keywords: Hierarchical organization ; macromolecular assemblies ; symmetry viruses ; embryology ; molecular pathology ; Hierarchischer Aufbau ; Macromolecular assemblies ; Symmetrie ; Viren ; Embryologie ; Molekularpathologie
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Zusammenfassung Bei Untersuchungen von makromolekularen Strukturen spielten Viren eine bedeutende Rolle. Struktur und Funktion in lebenden Systemen sind hierarchisch angeordnet. Ein wichtiges Ziel der Biologie ist die Herstellung einer Wechselbeziehung zwischen der Strukturhierarchie und der Kontrolle der Montage und folglich mit dem embryologischen Programm des Organismus.
    Notes: Summary Viruses played an important role in analysing macromolecular structures. Structure and function in living systems are arranged hierarchically. An important purpose of biology is to describe the correlation between the structural hierarchy and the observed assembly and to analyse the embryological program of the organism.
    Type of Medium: Electronic Resource
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  • 5
    ISSN: 1432-1904
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology , Natural Sciences in General
    Type of Medium: Electronic Resource
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  • 6
    Electronic Resource
    Electronic Resource
    Copenhagen : International Union of Crystallography (IUCr)
    Acta crystallographica 11 (1958), S. 213-220 
    ISSN: 0001-5520
    Source: Crystallography Journals Online : IUCR Backfile Archive 1948-2001
    Topics: Geosciences
    Type of Medium: Electronic Resource
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  • 7
    Electronic Resource
    Electronic Resource
    Copenhagen : International Union of Crystallography (IUCr)
    Acta crystallographica 20 (1966), S. 886-891 
    ISSN: 0001-5520
    Source: Crystallography Journals Online : IUCR Backfile Archive 1948-2001
    Topics: Geosciences
    Type of Medium: Electronic Resource
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  • 8
    Electronic Resource
    Electronic Resource
    Chester : International Union of Crystallography (IUCr)
    Journal of synchrotron radiation 4 (1997), S. 366-379 
    ISSN: 1600-5775
    Source: Crystallography Journals Online : IUCR Backfile Archive 1948-2001
    Topics: Geosciences , Physics
    Notes: Interest in the molecular mechanism of muscle contraction led to the search for an intense source of X-rays of 1–2 Å wavelength so as to be able to examine the rich X-ray diffraction patterns given by muscles during contraction. This led to the first X-ray diffraction experiments using synchrotron radiation, carried out by Holmes, Rosenbaum and Witz at DESY, Hamburg, in September 1970. In the following years, the EMBL Outstation, to utilize synchrotron radiation for biological structure determination, was established at DESY and preliminary experiments on muscle were also carried out at NINA (Daresbury). The development of time-resolved techniques for muscle diffraction was first started in the MRC Molecular Biology Laboratory in Cambridge, using rotating-anode X-ray tubes, and was then greatly extended at the EMBL Outstation, Hamburg, using the storage ring DORIS. This was a very successful venture, and helped to drive the whole technology development and to interest other potential users in the technique.
    Type of Medium: Electronic Resource
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  • 9
    Electronic Resource
    Electronic Resource
    Chester : International Union of Crystallography (IUCr)
    Journal of synchrotron radiation 5 (1998), S. 147-153 
    ISSN: 1600-5775
    Source: Crystallography Journals Online : IUCR Backfile Archive 1948-2001
    Topics: Geosciences , Physics
    Notes: The need to record low-angle-scattering X-ray fibre diagrams from muscle with millisecond time resolution drove the use of synchrotron radiation as an X-ray light source. The first smudgy diffraction patterns were obtained from a slice of insect flight muscle. Out of this grew the EMBL Outstation at DESY.
    Type of Medium: Electronic Resource
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  • 10
    Electronic Resource
    Electronic Resource
    Copenhagen : International Union of Crystallography (IUCr)
    Applied crystallography online 26 (1993), S. 82-91 
    ISSN: 1600-5767
    Source: Crystallography Journals Online : IUCR Backfile Archive 1948-2001
    Topics: Geosciences , Physics
    Notes: The processing and analysis of fibre diffraction data is often cumbersome. Presented here is a compact interactive computer program, PROFIDA (processing of fibre diffraction data), for fast processing of fibre diffraction data from biological molecules without many of the difficulties. Interactive rotation and centring of the diffraction pattern allow four-quadrant averaging and background subtraction. Furthermore, film coordinates may be transformed into reciprocal-space coordinates for any orientation of the specimen. Specimen tilt towards the incident-beam direction may be determined and the appropriate correction made. In addition, a routine that scales and merges data sets from a film pack is available. Data analysis is supported by an integration routine that allows layer-line profiles to be examined and integrated and layer-line plots to be produced under control of the cursor. The program is written in C to run on the Silicon Graphics Iris workstation with a button-and-dial box using the Iris graphics library.
    Type of Medium: Electronic Resource
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