3.4.14.12 - 3.4.14.12 expressed in Escherichia coli M15 cells 3.4.14.12 expressed in Escherichia coli strain JM83 3.4.14.12 into the pQE30 vector for transformation of Escherichia coli M15 cells 3.4.14.12 into the pQE30 vector, lacking the region corresponding to residues 1-38, for transformation of Escherichia coli M15 cells