1.13.11.61 expressed in Escherichia coli ER2566 cells 1.13.11.61 expression of separate domains of NspLOX and the entire protein in Escherichia coli 1.13.11.61 gene 9R-lox, recombinant expression of His-tagged enzyme in Escherichia coli 1.13.11.61 recombinant carboxy-terminal domain is purified after expression in Escherichia coli 1.13.11.61 recombinant expression of His-tagged enzyme in Escherichia coli strain BL21 Star