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  • 1
    Electronic Resource
    Electronic Resource
    Springer
    Archives of microbiology 72 (1970), S. 344-352 
    ISSN: 1432-072X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary 1. It was confirmed that the colourless alga, Prototheca zopfii converts glucose completely to lactic acid during fermentation. 2. Lactic acid was the only acidic product of glucose fermentation by Chlorella strain 211/1e, 1.4 moles being formed for each mole glucose fermented. This strain produced negligible carbon dioxide and hydrogen; other fermentation products were not identified. 3. In regard to capacity for fermenting glucose, the Chlorella strains examined fell into 4 groups, namely (a) those producing about 0.75 moles lactic acid/mole glucose (strains 8b, 8p, 11f, 11n), (b) those producing about 1.3 mole lactic acid/mole glucose (strains 1e and 11b), (c) those producing acid but not lactic acid (strain 11g), (d) those unable to ferment glucose (strains 1a, 1d and 9a). This grouping of strains agrees well with groupings based on other biochemical criteria.
    Type of Medium: Electronic Resource
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  • 2
    ISSN: 1432-072X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary 1. Isocitrate lyase disappeared from acetate-adapted cells of Chlorella when cells were incubated in darkness with glucose. Loss of activity was particularly rapid in nitrogen-free medium and was accompanied by disappearance of the enzyme protein. 2. Loss of isocitrate lyase activity was prevented by addition of 2-deoxyglucose, glucosamine, cycloheximide or chloramphenicol. 3. The rate of loss of activity was increased by addition of 2:4-dinitrophenol but this substance prevented the loss of enzyme protein i.e it protected the inactivated enzyme from degradation. 4. In vitro studies on the digestion of isocitrate lyase protein by papain showed that the enzyme protein was protected from digestion by its substrate, isocitrate, but that inhibitors of the enzyme, namely phosphoenol pyruvate, succinate, oxaloacetate and pyruvate, provided no protection.
    Type of Medium: Electronic Resource
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