Yongjun, Cai Directed evolution improves the fibrinolytic activity of nattokinase from Bacillus natto. [electronic resource] - FEMS microbiology letters Dec 2011 - 155-61 p. digital Publication Type: Journal Article; Research Support, Non-U.S. Gov't ISSN: 1574-6968 Standard No.: 10.1111/j.1574-6968.2011.02423.x doi Subjects--Topical Terms: Amino Acid SequenceBacillus--enzymologyBacterial Proteins--chemistryBinding Sites--geneticsCloning, MolecularDNA ShufflingDirected Molecular Evolution--methodsFibrinolysisGene LibraryKineticsModels, MolecularMolecular Sequence DataMutationOligopeptides--metabolismProtein Engineering--methodsRecombinant Proteins--chemistrySequence AlignmentSubtilisins--chemistry