Three strains of thermophilic bacteria, isolated initially from hot springs scattered on the planet, were able to degrade amyloids (some of them infectious) and to grow on media made of MBM. Hence, collections of microorganisms able to grow on keratin or on MBM, and secreting proteases able to degrade PrPsc were screened. One of the possible solutions is the use of microorganisms. more The interdiction of the use of MBM in animal feeding makes the elaboration of simple and economically viable procedures of valorization and decontamination of substances containing pathogenic prions necessary. The interdiction of the use of MBM in animal feeding makes the elaboration of simple and economic. The type strain of Thermogutta terrifontis, the type species of th. Based on their phylogenetic position and phenotypic features we suggest that the new isolates represent two novel species belonging to a new genus in the order Planctomycetales, for which the names Thermogutta terrifontis gen. They also could grow by fermentation of mono-, di- and polysaccharides. Both strains were capable of anaerobic respiration with nitrate and nitrite as electron acceptors as well as of microaerobic growth. Strain R1(T) grew optimally at 60 ☌ and pH 6.0-6.5 for SBP2(T) optimal conditions were at 52 ☌ and pH 7.5-8.0. Both isolates grew in the temperature range 30-60 ☌ and pH range 5.0-8.0. Strain R1(T) was isolated from a hot spring (Kunashir Island, Russia) and strain SBP2(T) was isolated from a deep gold mine (South Africa). more Two novel strains of thermophilic planctomycetes were recovered from terrestrial and subterranean habitats. Two novel strains of thermophilic planctomycetes were recovered from terrestrial and subterranean.
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