2.7.1.86	G183R	mutant with partially retained NADH kinase activity	
2.7.1.86	H231D	the mutant exhibits no activity towards NAD+ and low activity for NADH	
2.7.1.86	R293H	the mutation reduces the ratio of NADH kinase activity to NAD kinase activity from 8.6 to 2.1	
2.7.1.86	R293H/H231D	inactive