Complex sentence: This group of proteases have a limited distribution, and were originally thought to be limited to filamentous fungi mainly in the Ascomycota phylum, although members of this group of protease have since been identified in bacteria and archaea.
Split into simpler sentences: This group of proteases have a limited distribution, and were originally thought to be limited to filamentous fungi mainly in the Ascomycota phylum. Members of this group of protease however have since been identified in bacteria and archaea.