3.5.1.53 expressed in Escherichia coli 685687 3.5.1.53 expressed in Escherichia coli to form C-terminal (His)6-tagged protein 690188 3.5.1.53 expression in Escherichia coli strain DE3 685687 3.5.1.53 expression in Escherichia coli, His6-tag 652383 3.5.1.53 overexpression of gene aphA in Escherichia coli 692846