1.14.19.8 F232A site-directed mutagenesis, the mutant shows reduced activity compared to the wild-type enzyme 745166 1.14.19.8 F232G site-directed mutagenesis, the mutant shows reduced activity compared to the wild-type enzyme 745166 1.14.19.8 F232H site-directed mutagenesis, the mutant shows reduced activity compared to the wild-type enzyme 745166 1.14.19.8 F232L site-directed mutagenesis, the mutant shows reduced activity compared to the wild-type enzyme 745166 1.14.19.8 F232Y site-directed mutagenesis, the mutant shows reduced activity compared to the wild-type enzyme 745166 1.14.19.8 M77S site-directed mutagenesis, the mutant shows reduced activity compared to the wild-type enzyme 745166 1.14.19.8 M81A site-directed mutagenesis, the mutant shows highly reduced activity compared to the wild-type enzyme 745166 1.14.19.8 M81C site-directed mutagenesis, the mutant shows reduced activity compared to the wild-type enzyme 745166