Geobacillus

Tantalean JC, MA Araya. CP Saavedra, DE Fuementes, JM Perez, IL Calderon, P Youderian, CC Vasquez (2003) The Geobacillus stearothermophilus V iscS gene, encoding cysteine desulfurase, confers resistance to potassium tellurite in Escherichia coli. J Bacteriol 185 5831-5837. 

Unusual reactions have been encountered in the aerobic degradations carried out by Azoarcus evan-sii and Geobacillus stearothermophilus (Zaar et al. 2001). The anaerobic degradation of benzoate by Azoarcus evansii (Ebenau-Jehle et al. 2003) and Thauera aromatica (Domer and Boll 2002), and of 3-hydroxybenzoate by Th. aromatica (Laempe et al. 2001) is discussed later. 

Shallom, D., Belakhov, V., Solomon, D., Shoham, G., Baasov, T., and Shoham, Y. (2002) Detailed kinetic analysis and identification of the nucleophile in alpha-L-arabinofuranosidase from Geobacillus stearothermophilus T-6, a family 51 glycoside hydrolase. J. Biol. Chem. 277, 43667-43673. 

CGTases from Geobacillus stearothermophilus and Thermoanaerobacter sp. gave higher yields compared to those from Bacillus macerans and B. circulans (Figure 24.3). High thermal stability of the former enzymes allowed relatively high... 

FIGURE 24.5 Transglycosylation of MgV by various CGTases. MgV (6%) and tapioca starch (10%) were reacted with CGTases from the indicated origins at pH 6.5 and 50°C. Reaction time open bars, 24h shaded bars, 48 h. G., Geobacillus B., Bacillus. 

Lin, P.P. et al (2014) Isobutanol production at elevated temperatures in thermophilic Geobacillus thermoglucosi-dasius. Metab. Eng., 24, 1-8. 

G. thermoleovorans and G. caldoxylolyticus, accounted for 50% and 34.6% respectively. The results of these first studies concerning the presence and diversity of thermophilic bacteria in cool soil clearly demonstrated that there is a great biodiversity of these bacteria within the community and that the Geobacillus genus is dominant (Rahman et al., 2004). 

The results from the denitrification study gave parallel results to those previously reported for the aerobic activity of Geobacillus, i.e. there is no discernable activity at temperatures below about 40 °C and certainly none at temperatures close to normal soil temperatures. 

Fig 4.3 Bacterial cell using a Geobacillus (GEOB) probe in T80 spiked microcosm at 46 °C (A)and60°C(B). 

Banat, I.M., Marchant, R., Rahman, T.I. (2004). Geobacillus debilis sp. nov., a novel obUgately thermophilic bacterium isolated from a cool soil environment, and reassignment of Bacillus paWdus to Geobacillus pallidus comb. nov. International Journal ofSystematics and Evolutionary Microbiology 54, 2197-2201. 

A.B. et al. (2001). Taxonomic study of aerobic thermophilic bacilli descriptions of Geobacillus subterraneus gen. nov., sp. nov. and Geobacillus uzenensis sp. nov. from petroleum reservoirs and transfer of Bacillus stearothermophilus,... 

Bacillus thermoglucosidasius and Bacillus thermodenitrificans to Geobacillus as the new combinations G. stearothermophilus,... 

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