1.13.11.3 5.2 - completely inactive above pH 6.5 439488 1.13.11.3 7.2 - assay at 726535 1.13.11.3 7.3 8.5 immobilized enzyme 439485 1.13.11.3 7.5 - - 725655, 741660 1.13.11.3 7.5 - assay at 695732, 726481, 742063 1.13.11.3 7.5 - immobilized enzyme 439498 1.13.11.3 7.8 8 - 439484 1.13.11.3 8 - - 439483, 439502, 685485 1.13.11.3 8 - free enzyme 439498 1.13.11.3 8 9.2 - 743122