1.13.11.50 - 1.13.11.50 DNA and amino acid sequence determination and analysis 1.13.11.50 expressed in Escherichia coli BL21(DE3) cells 1.13.11.50 expressed in Escherichia coli strain BL21(DE3) 1.13.11.50 expression in Escherichia coli strain BL21(DE3) 1.13.11.50 expression of mutant gene vector in Escherichia coli BL21(DE3) 1.13.11.50 expression of Strep-tagged wild-type and mutant enzymes in Escherichia coli strain BL21(DE3)