2.3.1.56 expression as His-tagged protein in Escherichia coli 2.3.1.56 expression of isoform NAT1 in Escherichia coli 2.3.1.56 expression of isoform NAT2 in Escherichia coli 2.3.1.56 expression of isoforms 1 and 2 in chinese hamster lung fibroblast derived cell line V79MZ and in TA1538-derived Salmonella typhimurium strains 2.3.1.56 expression of isoforms NAT1 in Escherichia coli 2.3.1.56 expression of isoforms NAT2 in Escherichia coli 2.3.1.56 expression of wild-type and mutants in Escherichia coli strains DH5alpha and JM105