2.4.99.12	E276A	the mutation causes a decrease in the catalytic activity of the enzyme	723660	
2.4.99.12	G30A	the mutant is completely inactive	723660	
2.4.99.12	H272A/N273A	the mutations drastically affect the ability of the enzyme to transfer Kdo	723660	
2.4.99.12	R212A	the mutation clearly affects but does not completely prevent Kdo transfer activity	723660