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Table 3 Proteolytic enzymes from archaea

From: Biotechnological applications of archaeal enzymes from extreme environments

Type of protease Organism Type of enzyme Enzyme properties References
Optimal temperature (°C) Optimal pH Thermostability
Serine proteases Desulforococcus strain Tok12S1 Native 95 7.2 70–90 min, 95 °C [16]
Pyrobaculum aerophilum IM2 Native 100–130 Neutral-alkaline Not reported [17]
Staphylothermus marinus Native 90 9 Not reported [18]
Thermococcus kodakaraensis Recombinant 100 7–11.5 100 min, 100 °C [15]
Haloferax lucentensis VKMM 007 Native 60 8.0 > 30 min, 60 °C [20]
Thiol protease Pyrococcus horikoshi OT3 Recombinant 80 8.5 Not reported [14]
Acidic protease Sulfolobus solfataricus P2 Native 70 2 Not reported [19]
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