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  • 1
    Electronic Resource
    Electronic Resource
    Structure and evolution of opossum, guinea pig, and porcupine cytochrome b genes (1993)
    Springer
    Journal of molecular evolution 36 (1993), S. 327-334 
    Details
    ISSN: 1432-1432
    Keywords: Cytochrome b ; Mitochondrial DNA ; Mammalian phylogeny ; Functional constraints ; Coevolution ; Cavia porcellus ; Monodelphis domestica ; Hystrix africaeaustralis
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary We have sequenced the mitochondrial cytochrome b gene from the guinea pig, the African porcupine, and a South American opossum. A phylogenetic analysis, which includes 22 eutherian and four other vertebrate cytochrome b sequences, indicates that the guinea pig and the porcupine constitute a natural clade (Hystricomorpha) that is not a sister group to the clade of mice and rats (Myomorpha). Therefore, the hypothesis that the Rodentia is paraphyletic receives additional support. The artiodactyls, the perissodactyls, and the cetaceans form a group that is separated from the primates and the rodents. The 26 sequences are used to study the structure/function relationships in cytochrome b, whose function is electron transport. Most of the amino acid residues involved in the two reaction centers are well conserved in evolution. The four histidines that are believed to ligate the two hemes are invariant among the 26 sequences, but their nearby residues are not well conserved in evolution. The eight transmembrane domains represent some of the most divergent regions in the cytochrome b sequence. The rate of nonsynonymous substitution is considerably faster in the human and elephant lineages than in other eutherian lineages; the faster rate might be due to coevolution between cytochrome b and cytochrome c.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00182180
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  • 2
    Electronic Resource
    Electronic Resource
    Antithrombin III (AT3) polymorphism in the marsupialMonodelphis domestica: Identification and genetics (1992)
    Springer
    Biochemical genetics 30 (1992), S. 591-601 
    Details
    ISSN: 1573-4927
    Keywords: antithrombin III ; polymorphism ; genetics ; Monodelphis domestica
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: Abstract Antithrombin III polymorphism was observed in the gray short-tailed opossum,Monodelphis domestica, by either one-dimensional polyacrylamide gel electrophoresis (PAGE; pH 7.9), two-dimensional PAGE (agarose, pH 5.4; 12% T, pH 7.9), or isoelectric focusing (pH 4.2–4.9) followed by immunoblotting with rabbit antiserum to human antithrombin III. Family studies demonstrated an inheritance of three codominant autosomal alleles, AT3A, AT3B, and AT3C, and a population study revealed frequencies of 0.70, 0.10, and 0.20, respectively.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02399809
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  • 3
    Electronic Resource
    Electronic Resource
    X-linked glucose-6-phosphate dehydrogenase (G6PD) and autosomal 6-phosphogluconate dehydrogenase (6PGD) polymorphisms in baboons (1992)
    Springer
    Biochemical genetics 30 (1992), S. 567-579 
    Details
    ISSN: 1573-4927
    Keywords: glucose-6-phosphate dehydrogenase ; 6-phosphogluconate dehydrogenase ; baboon ; Papio ; X linkage
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: Abstract Electrophoretic polymorphisms of glucose-6-phosphate dehydrogenase (G6PD) and 6-phosphogluconate dehydrogenase (6PGD) were examined in captive colonies of five subspecies of baboons (Papio hamadryas). Phenotype frequencies and family data verified the X-linked inheritance of the G6PD polymorphism. Insufficient family data were available to confirm autosomal inheritance of the 6PGD polymorphism, but the electrophoretic patterns of variant types (putative heterozygotes) suggested the codominant expression of alleles at an autosomal locus. Implications of the G6PD polymorphism are discussed with regard to its utility as a marker system for research on X-chromosome inactivation during baboon development and for studies of clonal cell proliferation and/or cell selection during the development of atherosclerotic lesions in the baboon model.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00553801
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  • 4
    Electronic Resource
    Electronic Resource
    X-linked glucose-6-phosphate dehydrogenase (G6PD) and autosomal 6-phosphogluconate dehydrogenase (6PGD) polymorphisms in baboons (1992)
    Springer
    Biochemical genetics 30 (1992), S. 567-579 
    Details
    ISSN: 1573-4927
    Keywords: glucose-6-phosphate dehydrogenase ; 6-phosphogluconate dehydrogenase ; baboon ; Papio ; X linkage
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: Abstract Electrophoretic polymorphisms of glucose-6-phosphate dehydrogenase (G6PD) and 6-phosphogluconate dehydrogenase (6PGD) were examined in captive colonies of five subspecies of baboons (Papio hamadryas). Phenotype frequencies and family data verified the X-linked inheritance of the G6PD polymorphism. Insufficient family data were available to confirm autosomal inheritance of the 6PGD polymorphism, but the electrophoretic patterns of variant types (putative heterozygotes) suggested the codominant expression of alleles at an autosomal locus. Implications of the G6PD polymorphism are discussed with regard to its utility as a marker system for research on X-chromosome inactivation during baboon development and for studies of clonal cell proliferation and/or cell selection during the development of atherosclerotic lesions in the baboon model.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02399807
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  • 5
    Electronic Resource
    Electronic Resource
    Antithrombin III (AT3) polymorphism in the marsupialMonodelphis domestica: Identification and genetics (1992)
    Springer
    Biochemical genetics 30 (1992), S. 591-601 
    Details
    ISSN: 1573-4927
    Keywords: antithrombin III ; polymorphism ; genetics ; Monodelphis domestica
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: Abstract Antithrombin III polymorphism was observed in the gray short-tailed opossum,Monodelphis domestica, by either one-dimensional polyacrylamide gel electrophoresis (PAGE; pH 7.9), two-dimensional PAGE (agarose, pH 5.4; 12% T, pH 7.9), or isoelectric focusing (pH 4.2–4.9) followed by immunoblotting with rabbit antiserum to human antithrombin III. Family studies demonstrated an inheritance of three codominant autosomal alleles, AT3A, AT3B, and AT3C, and a population study revealed frequencies of 0.70, 0.10, and 0.20, respectively.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00553803
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  • 6
    Electronic Resource
    Electronic Resource
    Plasma protease inhibitor (PI) system in the laboratory opossum,Monodelphis domestica (1996)
    Springer
    Biochemical genetics 34 (1996), S. 389-399 
    Details
    ISSN: 1573-4927
    Keywords: protease inhibitor ; polymorphism ; genetics ; Monodelphis domestica
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: Abstract Protease inhibitor (PI) polymorphism was observed in the laboratory opossum,Monodelphis domestica, by either one-dimensional acid polyacrylamide gel electrophoresis (PAGE; pH 4.6) or isoelectric focusing (pH 3.5-5.0) followed by immunoblotting with rabbit antiserum to human α1-antitrypsin; but acid PAGE produced superior resolution of the PI proteins. Family studies demonstrated an inheritance of nine codominant autosomal alleles,PI D ,PI E ,PI F ,PI G ,PI H ,PI I ,PI J ,PI K , andPI M , and a population study revealed frequencies of 0.411, 0.010, 0.341, 0.034, 0.023, 0.071, 0.035, 0.020, and 0.055, respectively.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00554414
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