3.4.23.20	T219A	constructed by cassette insertion	-, 653829	
3.4.23.20	T219A	site-directed mutagenesis, comparison of substrate binding to the wild-type enzyme	668813	
3.4.23.20	T219G	constructed by cassette insertion	-, 653829	
3.4.23.20	T219G	site-directed mutagenesis, comparison of substrate binding to the wild-type enzyme	668813	
3.4.23.20	T219S	constructed by cassette insertion	-, 653829	
3.4.23.20	T219S	site-directed mutagenesis, comparison of substrate binding to the wild-type enzyme	668813	
3.4.23.20	T219V	constructed by cassette insertion	-, 653829	
3.4.23.20	T219V	site-directed mutagenesis, comparison of substrate binding to the wild-type enzyme	668813