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  • 1
    Electronic Resource
    Electronic Resource
    Intranuclear targeting of DNA replication factors (1998)
    New York, N.Y. : Wiley-Blackwell
    Journal of Cellular Biochemistry 72 (1998), S. 243-249 
    Details
    ISSN: 0730-2312
    Keywords: functional organization ; nucleus ; targeting sequence ; DNA replication ; nuclear matrix ; cell cycle ; DNA methyltransferase ; DNA ligase I ; PCNA ; DNA replication factors ; GFP ; Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Chemistry and Pharmacology , Medicine
    Notes: Mammalian nuclei are highly organized into functional compartments. Major nuclear processes like DNA replication and RNA processing take place in distinct foci. These microscopically visible foci are formed by the assembly of, for example, DNA replication factors and associated proteins into megadalton complexes often referred to as protein machines or factories. Thus far, two proteins, DNA ligase I and DNA methyltransferase (DNA MTase), have been analyzed in greater detail. In both cases, the assembly process appears to be controlled by distinct targeting sequences that were attached to the catalytic protein core in the course of evolution and mediate the association with replication factories in mammalian cells. The dynamics of these nuclear structures throughout the cell cycle are analyzed using green fluorescent protein (GFP). Further studies are needed to elucidate the architecture, regulation, and role of these subnuclear structures. J. Cell. Biochem. Suppls. 30/31:243-249, 1998. © 1998 Wiley-Liss, Inc.
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
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    Paper (German National Licenses)
  • 2
    Electronic Resource
    Electronic Resource
    Protein targeting to subnuclear higher order structures: A new level of regulation and coordination of nuclear processes (1998)
    New York, N.Y. : Wiley-Blackwell
    Journal of Cellular Biochemistry 70 (1998), S. 222-230 
    Details
    ISSN: 0730-2312
    Keywords: functional organization of the nucleus ; nucleolus ; speckled compartment ; targeting sequence ; DNA replication ; RNA splicing ; nuclear matrix ; cell cycle ; DNA methyltransferase ; DNA ligase I ; Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Chemistry and Pharmacology , Medicine
    Notes: Though there are no separating membranes within the nucleus, different factors are often concentrated at sites where their respective function is required, a phenomenum referred to as functional organization of the nucleus. How is then this organization achieved and how are the different metabolic processes integrated in the nucleus? One emerging principle was revealed by the identification of protein domains that, though not involved in catalysis, regulate enzyme activity at a higher order level by targeting enzymes to the right place at the right time. These targeting sequences constitute an assembly code for nuclear ‘protein factories,’ which ensure the extremely high efficiency and accuracy needed in a complex and competitive environment as the living mammalian cell. J. Cell. Biochem. 70:222- 230, 1998. © 1998 Wiley-Liss, Inc.
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
    Location Call Number Expected Availability
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    Paper (German National Licenses)
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