Metabolism characteristics of <Emphasis Type="Italic">Chelativorans oligotrophicus</Emphasis> by two-phase growth on the mixture of EDTA and glucose |
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Authors: | E N Kaparullina N V Doronina L V Trilisenko V M Vagabov Yu A Trotsenko |
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Institution: | (1) Department of Microbiology, University of Washington, Seattle, WA, USA |
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Abstract: | The obligate destructor of ethylene diamine tetraacetate—a culture of Chelativorans oligotrophicus LPM-4—did not grow on a medium with glucose, but it was good to use it under cultivation on a mixture with EDTA after considerable
decrease of the EDTA concentration in the medium (two-phase growth). Strong inhibition of hexokinase and glucose 6-phosphate
dehydrogenase in cell exracts 4 mM EDTA was revealed. Using EDTA, cells accumulated polyphosphates whose rate decreased during
glucose utilization phase. High activities of polyphosphate biosynthesis ferments (adenylat kinase and polyphosphate kinase)
were distinguished during the first phase of the cultivation; considerable decrease of them and increase of polyphosphate
glucokinase were found during the second phase of the cultivation. This points to the possible participating of polyphosphates
in glucose metabolism as a supplementary energy source. |
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