1.3.1.31 2-enoate reductase Paraclostridium bifermentans 1.21.99.5 tetrachloroethene reductive dehalogenase Paraclostridium bifermentans 1.21.99.5 tetrachloroethene reductive dehalogenase Paraclostridium bifermentans DPH-1 4.2.1.11 phosphopyruvate hydratase Paraclostridium bifermentans