5.6.2.1	DNA topoisomerase	-	
5.6.2.2	DNA topoisomerase (ATP-hydrolysing)	-	
5.6.2.3	DNA 5'-3' helicase	-	
5.6.2.4	DNA 3'-5' helicase	-	
5.6.2.B2	DNA 3'-5' helicase	preliminary BRENDA-supplied EC number