Anaerobic growth of Thiobacillus ferrooxidans

Article Abstract:

The ability of Thiobacillus ferrooxidans to use ferric iron as an electron acceptor under anaerobic condition was demonstrated. Anaerobic oxidation of elemental sulfur with ferric sulfate as an electron acceptor supported the exponential growth of T. ferrooxidans, accompanied by an increase of the ferrous iron concentration and a decrease of the culture pH. There was no growth in the absence of elemental sulfur or ferric iron. There was a linear relationship between the ferrous iron concentration and cell counts.

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Improved anaerobic use of arginine by Saccharomyces cerevisiae

Article Abstract:

Reserch demonstrates that by genetical manipulation, all four nitrogens in the arginine can be made to undergo catabolism in Saccharomyces cerevisiae. This is accomplished by bypassing normal formation of proline to glutamate under anaerobic conditions. Data show the modified strain accumulates glutamate, produces twice as much cell mass as the wild-type under anaerobic and arginine limiting conditons.

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Characterization of an operon encoding two c-type cytochromes, an aa (sub)3-type cytochrome oxidase, and rusticyanin in Thiobacillus ferrooxidans ATCC 33020

Article Abstract:

Research conducted on the gene encoding of the electron transfer proteins is discussed. The results demonstrate that the genes encoding four cytochrome c oxidase subunits belong to the same operon.

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