3.1.1.75 5 - - 665994, 681624, 694834, 749434 3.1.1.75 6 - - 208343, 730744 3.1.1.75 6.4 - - 752005 3.1.1.75 7 - - 682992 3.1.1.75 7 - esterase assay at 729068 3.1.1.75 7 8 substrate p-nitrophenyl butyrate with optimal activity at 50-55°C and pH 7-8 690598 3.1.1.75 7.5 - - 752004 3.1.1.75 7.5 - assay at 702532, 729085 3.1.1.75 7.5 - poly((R)-3-hydroxybutyrate)-degrading activity assay at 729068 3.1.1.75 7.9 - isoform E2 208351