5.3.1.17 expressed in Escherichia coli BL21 cells 727101 5.3.1.17 expressed in Escherichia coli JM109 or KRX cells 726324 5.3.1.17 expression in Escherichia coli 748204, 749085 5.3.1.17 expression in Escherichia coli, strain B348 663364