6.2.1.54	-	
6.2.1.54	dltA, enzymes of D-alanine metabolism are encoded in the dltA operon, DNA and amino acid sequence determination and analysis, a functional dlt operon confers resistance to nisin and gallidermin	
6.2.1.54	expressed in Escherichia coli as a His-tagged fusion protein	
6.2.1.54	overexpression of DltA and DltC in Escherichia coli	
6.2.1.54	the pET28a vector is used