Coolbear, T., Daniel, R.M., Cowan, D.A. & Morgan, H.W. (1988). Proteases from extreme thermophiles. Annuals of the New York Academy of Sciences, 542, 279-281.
Permanent Research Commons link: http://hdl.handle.net/10289/4506
Extremely thermophilic bacteria are those that grow optimally at 65 ℃ or higher. Comparative data are presented on extracellular proteases from two extremely thermophilic eubacteria and one extremely thermophilic archaebacterium. The eubacteria were a Bacillus isolate (protease unnamed) and a Thermus isolate (protease named caldolysin) with optimum growth temperatures of 65 ℃ and 75 ℃, respectively. The archaebacterium was a Desulfurococcus isolate (protease named archaelysin) with an optimum growth temperature of 88 ℃.