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  • 1
    ISSN: 1432-0614
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Summary Baker's yeast (Saccharomyces cerevisiae) was cultivated under different intensities of aeration on glucose and on ethanol. Seventeen enzymes of the Embden-Meyerhof pathway and the TCA cycle or related reactions were then assayed by starch gel electrophoresis. There were both qualitative and quantitative differences in many enzymes, most notably in glyceraldehyde-3-phosphate dehydrogenase, alcohol dehydrogenase, isocitrate dehydrogenase, malate dehydrogenase, and fumarase. Enzyme electrophoresis seems to offer a promising method for rapidly obtaining information about many yeast enzymes from a large number of samples.
    Type of Medium: Electronic Resource
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  • 2
    ISSN: 1615-6110
    Keywords: Angiosperms ; Ranunculaceae ; Anemone ; Pulsatilla ; Hepatica ; Chloroplast DNA ; restriction endonuclease analysis
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Chloroplast DNA of seven species belonging toAnemone (sectt.Omalocarpus, Anemonidium, andAnemonanthea),Hepatica, andPulsatilla have been analyzed by restriction enzymes. According to the dendrogram constructed, the sections ofAnemone and the generaHepatica andPulsatilla seem to be evolutionary approximately equidistant to each others. This supports the concept that these groups should be treated on a similar taxonomic level, either as genera or subgenera.
    Type of Medium: Electronic Resource
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  • 3
    ISSN: 1573-6857
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Genetic polymorphism at about twenty enzyme loci in one mainland and in six differentially isolated island populations of Philaenus spumarius (L.) was studied by starch gel electrophoresis. The populations have different average degrees of heterozygosity, so that the most isolated population is the least polymorphic. The differences in heterozygosity seem to be correlated to the size of the population and the degree of isolation from other populations. With a single exception, the most common allele in each locus is the most common one everywhere. The results are compared with the differences observed in the color polymorphism of Philaenus island populations. The allele frequencies of enzyme loci are maintained by selection; the fact that the prevalent allele is the same in all populations may be due to selection and founder principle.
    Type of Medium: Electronic Resource
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