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  • 11
    ISSN: 1573-4927
    Keywords: mouse ; aldehyde dehydrogenase ; isozymes ; testis ; stomach ; genetic linkage ; loci
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: Abstract Electrophoretic and activity variants have been observed for stomach and testis aldehyde dehydrogenases, respectively, among inbred strains of the house mouse (Mus musculus). Genetic evidence was obtained for two new loci encoding these isozymes (designated Ahd-4 and Ahd-6, respectively, for the stomach and testis isozymes) which segregated independently of a number of mouse gene markers, including Ahd-1 (encoding mitochondrial aldehyde dehydrogenase) on chromosome 4, ep (pale ears), a marker for chromosome 19, on which Ahd-2 (encoding liver cytosolic aldehyde dehydrogenase) has been previously localized, and Adh-3 (encoding the stomach-specific isozyme of alcohol dehydrogenase) on chromosome 3. Recombination studies have indicated, however, that Ahd-4 and Ahd-6 are distinct but closely linked loci on the mouse genome. An extensive survey of the distribution of Ahd-1, Ahd-2, Ahd-4, and Ahd-6 alleles among 56 strains of mice is reported. No variants have been observed, so far, for the microsomal (AHD-3) and mitochondrial/cytosolic (AHD-5) isozymes previously described. This study, in combination with previous investigations on mouse aldehyde dehydrogenases, provides evidence for six genetic loci for this enzyme.
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  • 12
    ISSN: 1573-4927
    Keywords: alcohol dehydrogenase ; aldehyde dehydrogenase ; eye ; stomach ; mouse
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: Abstract Electrophoretic and activity variation of the stomach and ocular isozyme of aldehyde dehydrogenase (designated AHD-4) was observed between C57BL/6J and SWR/J inbred strains of mice. The phenotypes were inherited in a normal mendelian fashion, with two alleles at a single locus (Ahd-4) showing codominant expression. The alleles assorted independently of those atAdh-3 [encoding the stomach and ocular isozyme of alcohol dehydrogenase (ADH-C2)] on chromosome 3. Three chromosome 11 markers, hemoglobin α-chain (Hba), trembler (Tr), and rex (Re), were used in backcross analyses which established thatAhd-4 is closely linked to trembler. The distribution patterns for stomach and ocular AHD-4 phenotypes were examined among SWXL recombinant inbred mice, and those for stomach and ocular ADH-C2 among BXD recombinant inbred strains. The data provided evidence for the genetic identity of stomach and ocular ADH-C2 and of stomach and ocular AHD-4.
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  • 13
    ISSN: 1573-4927
    Keywords: marsupial ; opossum ; alcohol dehydrogenase ; isozymes ; genetics
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: Abstract Polyacrylamide gel-isoelectric focusing (PAGE-IEF) methods were used to examine the multiplicity, tissue distribution, and biochemical genetics of alcohol dehydrogenase (ADH) isozymes among gray short-tailed opossums (Monodelphis domestica). Seven ADH isozymes were resolved and distinguished on the basis of their isoelectric points, tissue distributions, and substrate and inhibitor specificities. ADH1 and ADH2 exhibited Class I properties and were observed in liver (and intestine) extracts. ADH3, ADH4, and ADH5 showed “high-K m ” (possibly Class IV) properties, with ADH3 and ADH4 exhibiting high activity in cornea, ear, stomach, and esophagus extracts. ADH6 and ADH7 exhibited Class III properties, including activities as formaldehyde dehydrogenases, with each showing different tissue distribution characteristics; ADH6 was widely distributed, and ADH7 was restricted to prostate extracts. An additional form of formaldehyde dehydrogenase (FDH) was observed, which was inactive with hexenol and ethanol as substrates. Isoelectric point variants were observed for ADH3 (three forms) and for ADH4 (two forms), and the inheritance of ADH3 was studied in 15 families ofM. domestica. The data were consistent with codominant inheritance of two alleles (ADH3*A andADH3*B) at a single autosomal locus (designatedADH3) and with a model involving a dimeric ADH isozyme: ADH3 (γ2 isozyme, forming three dimers designated γ 2 1 , γ1 γ2, and γ 2 2 in heterozygous individuals).
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  • 14
    ISSN: 1573-4927
    Keywords: marsupial ; opossum ; alcohol dehydrogenase ; isozymes ; genetics
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: Abstract Polyacrylamide gel-isoelectric focusing (PAGE-IEF) methods were used to examine the multiplicity, tissue distribution, and biochemical genetics of alcohol dehydrogenase (ADH) isozymes among gray short-tailed opossums (Monodelphis domestica). Seven ADH isozymes were resolved and distinguished on the basis of their isoelectric points, tissue distributions, and substrate and inhibitor specificities. ADH1 and ADH2 exhibited Class I properties and were observed in liver (and intestine) extracts. ADH3, ADH4, and ADH5 showed “high-K m ” (possibly Class IV) properties, with ADH3 and ADH4 exhibiting high activity in cornea, ear, stomach, and esophagus extracts. ADH6 and ADH7 exhibited Class III properties, including activities as formaldehyde dehydrogenases, with each showing different tissue distribution characteristics; ADH6 was widely distributed, and ADH7 was restricted to prostate extracts. An additional form of formaldehyde dehydrogenase (FDH) was observed, which was inactive with hexenol and ethanol as substrates. Isoelectric point variants were observed for ADH3 (three forms) and for ADH4 (two forms), and the inheritance of ADH3 was studied in 15 families ofM. domestica. The data were consistent with codominant inheritance of two alleles (ADH3*A andADH3*B) at a single autosomal locus (designatedADH3) and with a model involving a dimeric ADH isozyme: ADH3 (γ2 isozyme, forming three dimers designated γ 2 1 , γ1 γ2, and γ 2 2 in heterozygous individuals).
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  • 15
    ISSN: 1573-4927
    Keywords: aldehyde dehydrogenase ; isozymes ; opossum ; genetics
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: Abstract Polyacrylamide gel isoelectric focusing (PAGE-IEF), cellulose acetate electrophoresis, and histochemical techniques were used to examine the tissue and subcellular distribution, genetics and biochemical properties of aldehyde dehydrogenase (ALDH) isozymes in a didelphid marsupial, the gray short-tail opossum (Monodelphis domestica). At least 14 zones of activity were resolved by PAGE-IEF and divided into five isozyme groups and three ALDH classes, based upon comparisons with properties previously reported for human, baboon, rat, and mouse ALDHs. Opossum liver ALDHs were distributed among cytosol (ALDHs 1 and 5) and large granular (mitochondrial) fractions (ALDHs 2 and 5). Similarly, kidney ALDHs were distributed between the cytosol (ALDH5) and the mitochondrial fractions (ALDHs 2, 4, and 5), whereas a major isozyme (ALDH3), found in high activity in cornea, esophagus, ear pinna, tail, and stomach extracts, was localized predominantly in the cytosol fraction. Phenotypic variants of the latter enzyme were shown to be inherited in a normal Mendelian fashion, with two alleles at a single locus (ALDH3) showing codominant expression. The data provided evidence for genetic identity of corneal, ear pinna, tail, and stomach ALDH3 and supported biochemical evidence from other mammalian species that this enzyme has a dimeric subunit structure.
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  • 16
    ISSN: 1573-4927
    Keywords: aldehyde dehydrogenase ; isozymes ; opossum ; genetics
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: Abstract Polyacrylamide gel isoelectric focusing (PAGE-IEF), cellulose acetate electrophoresis, and histochemical techniques were used to examine the tissue and subcellular distribution, genetics and biochemical properties of aldehyde dehydrogenase (ALDH) isozymes in a didelphid marsupial, the gray short-tail opossum (Monodelphis domestica). At least 14 zones of activity were resolved by PAGE-IEF and divided into five isozyme groups and three ALDH classes, based upon comparisons with properties previously reported for human, baboon, rat, and mouse ALDHs. Opossum liver ALDHs were distributed among cytosol (ALDHs 1 and 5) and large granular (mitochondrial) fractions (ALDHs 2 and 5). Similarly, kidney ALDHs were distributed between the cytosol (ALDH5) and the mitochondrial fractions (ALDHs 2, 4, and 5), whereas a major isozyme (ALDH3), found in high activity in cornea, esophagus, ear pinna, tail, and stomach extracts, was localized predominantly in the cytosol fraction. Phenotypic variants of the latter enzyme were shown to be inherited in a normal Mendelian fashion, with two alleles at a single locus (ALDH3) showing codominant expression. The data provided evidence for genetic identity of corneal, ear pinna, tail, and stomach ALDH3 and supported biochemical evidence from other mammalian species that this enzyme has a dimeric subunit structure.
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  • 17
    ISSN: 0192-253X
    Keywords: alcohol dehydrogenase C2 ; isozymes ; temporal locus ; genetics ; chromosome 3 ; Life and Medical Sciences ; Genetics
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology
    Notes: The tissue specificity of a proposed cis-acting temporal locus (Adh-3t), which regulates alcohol dehydrogenase C2 (ADH-C2) activity in mouse reproductive tissue extracts, has been examined in C5 7BL/6J, SM/J, F1 (SM/J × C5 7BL/6J) mice as well as in progeny of an (F1 [SM/J × C5 7BL/6J] × C5 7BL/6J) back-cross. Electrophoretic variants for ADH-C2, previously used to localize the gene (Adh-3) encoding this enzyme on chromosome 3, enabled the relative parental contributions to ADH-C2 phenotype in F1 and backcross mouse tissues to be determined. These analyses demonstrated that (1) stomach, kidney, lung, adrenals, seminal vesicles, epididymis, uterus, and ovary ADH-C2 is encoded by a single locus (Adh-3); Adh-3t is differentially active in various tissues, eg, lung exhibits no apparent activity whereas the temporal locus is fully active in seminal vesicles; (3) Adh-3t is probably differentically active in different cells of some tissues, eg, adrenals. Specific activity profiles of stomach and epididymal ADH-C2 during the neonatal development of C5 7BL/6J, SM/J, and F1 (SM/J × C5 7BL/6J) male mice supported the proposal for a cis-acting temporal locus for this enzyme. Genetic analyses examining segregation of Adh-3 and Adh-3t among backcross progeny suggested that these are distinct but closely linked loci, since one recombinant among 256 progeny was observed. Linkage data of Adh-3 with Va (varitint-waddler) and de (droopy ear) was also obtained, which suggested that Adh-3 is localized on chromosome 3 between Va and de.
    Additional Material: 4 Ill.
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  • 18
    Publication Date: 1978-12-01
    Print ISSN: 0018-067X
    Electronic ISSN: 1365-2540
    Topics: Biology
    Published by Springer Nature
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  • 19
    Publication Date: 1979-06-01
    Print ISSN: 0006-2928
    Electronic ISSN: 1573-4927
    Topics: Biology , Chemistry and Pharmacology
    Published by Springer
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  • 20
    Publication Date: 1978-04-01
    Print ISSN: 0006-2928
    Electronic ISSN: 1573-4927
    Topics: Biology , Chemistry and Pharmacology
    Published by Springer
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