2.4.1.37 ABO glycosyltransferase polymorphisms, phenotyping and genotyping, overview 2.4.1.37 catalytic domain expressed in Escherichia coli 2.4.1.37 DNA and amino acid sequence determination and analysis, expression of wild-type and mutant enzymes in Escherichia coli strain BL21 2.4.1.37 expressed in Escherichia coli 2.4.1.37 expressed in Escherichia coli BL21 cells 2.4.1.37 expressed in Escherichia coli TG-1 2.4.1.37 expressed in Escherichia coli TG-1, the membrane-anchoring domain is replaced with an ompA bacterial secretory signal 2.4.1.37 expression in COS-1 cell 2.4.1.37 expression of wild-type and chimeric mutant enzyme in HeLa cells 2.4.1.37 expression of wild-type and mutant enzymes in Escherichia coli