3.2.1.156 6 - - 677695, 713920, 753453 3.2.1.156 6 - assay at 731182 3.2.1.156 6.2 7.3 - 659431 3.2.1.156 7 - - 680048, 753453 3.2.1.156 7 - recombinant enzyme 752545