Comparison of thermostable phosphatase and proteases from thermophilically disposed transition species and thermophilic actinomycetes.

Thermoactinomycetes vulgaris is a thermophilic actinomycetes growing optimally at 50 degrees C and Streptomyces albus, S. coelicolor, S. fasciculus and S. olivochromogenes are thermophilically disposed transition species of actinomycetes, which have optimum biomass at 40 degrees C. The acid/alkaline phosphatase and acid/alkaline/neutral protease enzyme from Streptomycetes species showed enzyme activity up to 90 degrees C. In comparison to phosphatases and proteases from T. vulgaris it was concluded that these thermophilically disposed transition species showed macromolecular thermostability i.e. thermostable enzymes and protein.