Summary
The influence of glucose on adenine nucleotide levels and energy charge in a growing culture of Acetobacter aceti and a glucose sensitive mutant, whose growth on ethanol is inhibited by glucose, was determined.
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1.
Both strains showed an abrupt fall of the intracellular ATP after substrate exhaustion.
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2.
Glucose alone could not maintain the energy charge in either strain at the high values observed during growth on ethanol.
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3.
Glucose lowered the total adenine nucleotide content in the mutant in the absence of ethanol.
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4.
During the inhibition of growth by glucose in the glucose sensitive mutant, three phases could be distinguished:
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a)
A first period with a transient decline in the total adenine nucleotide level and no change in the energy charge.
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b)
A recovery of the total adenine nucleotide level to its previous value. This second phase lasted as long as there was ethanol in the medium.
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c)
A third period after ethanol exhaustion characterized by a lower total adenine nucleotide level in the presence of glucose and a lower energy charge.
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a)
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Bächi, B., Ettlinger, L. Influence of glucose on adenine nucleotide levels and energy charge in Acetobacter aceti . Archiv. Mikrobiol. 93, 155–164 (1973). https://doi.org/10.1007/BF00424946
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DOI: https://doi.org/10.1007/BF00424946