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  • 1
    Electronic Resource
    Electronic Resource
    Amsterdam : Elsevier
    Gene 73 (1988), S. 141-152 
    ISSN: 0378-1119
    Keywords: Recombinant DNA ; Saccharomyces cerevisiae ; chromosome ; expression ; gene cloning ; gene disruption ; nucleotide sequence ; sequence homologies ; transcript mapping
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Biology
    Type of Medium: Electronic Resource
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  • 2
    ISSN: 0888-7543
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Biology , Medicine
    Type of Medium: Electronic Resource
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  • 3
    ISSN: 0888-7543
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Biology , Medicine
    Type of Medium: Electronic Resource
    Location Call Number Limitation Availability
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  • 4
    Electronic Resource
    Electronic Resource
    Springer
    Histochemistry and cell biology 107 (1997), S. 1-10 
    ISSN: 1432-119X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Abstract  Histones are the major protein constituents of the chromatin of eukaryotic cell nuclei. This group of basic proteins is extremely conserved throughout evolution and includes five classes termed H1, H2A, H2B, H3and H4. In mammals, each of these classes except H4 is subdivided into several subtypes. The most divergent class of histones is the H1 protein family, which consists of seven different subtypes, termed H1.1–H1.5, H1°, and H1t. The subtypes H1.2 and H1.4 are found in most somatic cell nuclei, whereas H1° is found in several differentiated tissues, and H1t is restricted to mammalian testicular cells. Similarly, core histone subtypes replacing the major forms of H2A, H2B or H3 have been described. Biochemical analysis of protein and RNA from different tissues and cell lines demonstrates varied patterns of expression of individual histone subtype genes. Moreover, antibodies against specific histone subtypes and in situ hybridization with subtype-specific probes indicate that the expression of histone subtype genes is in several cases modulated in a tissue-specific manner. This is particularly evident at the different stages of spermatogenesis when chromatin undergoes substantial reorganization, which finally results in the highly condensed state of chromatin of the mature sperm head.
    Type of Medium: Electronic Resource
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  • 5
    Electronic Resource
    Electronic Resource
    New York, N.Y. : Wiley-Blackwell
    Journal of Cellular Biochemistry 54 (1994), S. 423-431 
    ISSN: 0730-2312
    Keywords: histone genes ; gene clusters ; promoter structures ; gene regulation ; Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Chemistry and Pharmacology , Medicine
    Notes: The H1 family is the most divergent subgroup of the highly conserved class of histone proteins [Cole: Int J Pept Protein Res 30:433-449, 1987]. In several vertebrate species, the H1 complement comprises five or more subtypes, and tissue specific patterns of H1 histones have been described. The diversity of the H1 histone family raises questions about the functions of different H1 subtypes and about the differential control of expression of their genes. The expression of main type H1 genes is coordinated with DNA replication, whereas the regulation of synthesis of replacement H1 subtypes, such as H1° and H5, and the testis specific H1t appears to be more complex. The differential control of H1 gene expression is reflected in the chromosomal organization of the genes and in different promoter structures. This review concentrates on a comparison of the chromosomal organization of main type and replacement H1 histone genes and on the differential regulation of their expression. General structural and functional data, which apply to both H1 and core histone genes and which are covered by recent reviews, will not be discussed in detail.
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
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  • 6
    Electronic Resource
    Electronic Resource
    New York, N.Y. : Wiley-Blackwell
    Journal of Cellular Biochemistry 64 (1997), S. 573-578 
    ISSN: 0730-2312
    Keywords: histone H1 ; nuclear transport ; permeabilized cells ; nuclear localization signal ; Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Chemistry and Pharmacology , Medicine
    Notes: We have studied the nuclear transport of H1 histones using the digitonin permeabilization assay system in order to establish the transport requirements for H1 translocation to the nucleus. Using HeLa cells and fluorescence-labeled calf thymus H1, we show that the H1 nuclear transport in permeabilized cells requires the addition of cytoplasmic extract. Furthermore, it can be blocked by energy depletion and by chilling or by addition of wheat germ agglutinin or by nonhydrolyzable GTP analogs. Thus, the import of H1 histones follows the criteria established for nuclear import mediated by nuclear localization signals (NLS). The distribution of basic amino acids in average H1 sequences, however, does not allow the assignment of a specific element as a classical NLS. J. Cell. Biochem. 64:573-578. © 1997 Wiley-Liss, Inc.
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
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