Holger Janssen

Systems Biology of Clostridium acetobutylicum - a possible answer to dwindling crude oil reserves

Clostridia are very ancient bacteria which evolved before the earth had an oxygen atmosphere. To them the air we breathe is a poison. To survive they produce a spore resting stage, resistant to physical and chemical agents.

Some species cause devastating diseases, such as the superbug Clostridium difficile. On the other hand, most are totally harmless, and make a wide range of chemicals useful to man. The best example is Clostridium acetobutylicum which makes butanol. Butanol is an alcohol, which ...

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MIAPE based Gel Electrophoresis Data Entry Worksheet

Monitoring of end products ethanol, acetone, butanol, acetate and butyrate during master fermentation of Clostridium acetobutylicum at the steady state pH values 5.5, 5.3, 5.1, 4.9 and 4.7.

Micro array analysis of steady-state growing cells of Clostridium acetobutylicum at pH 5.7 (acidogenesis) in comparison to pH 4.5 (solventogenesis).

Monitoring of end products in mM of ethanol, acetone, butanol, acetate and butyrate during master fermentation of Clostridium acetobutylicum at the steady state pH values 5.7 (acidogenesis) and 4.5 (solventogenesis).

Micro array analyses of all mRNA levels of cells growing at steady state pH values 5.7, 5.5, 5.3, 5.1, 4.9, 4.7 compared to the same reference steady-state pH 4.5.

All spots and identified proteins of Clostridium acetobutylicum growing at steady-state pH 5.7 (acidogenesis) and pH 4.5 (solventogenesis), respectively, using 2D PAGE and Maldi-TOF analysis. The focus were cytosolic proteins with an isoelectric point bewteen 4 and 7 as well as a molecular weight of 180-10 kDa.

Representation of all prepared 2D PAGE analyses of cytosolic proteins of Clostridium acetobutylicum growing continuously at pH 5.5, 5.3, 5.1, 4.9 and 4.7.