3.1.1.53	A385T	naturally occuring mutation	730718	
3.1.1.53	A394T	naturally occuring mutation	730718	
3.1.1.53	A467V	naturally occuring mutation from patients with anti-PIT-1 antibody syndrome. The mutation occurs in a heterozygous state in all the patients with anti-PIT-1 antibody syndrome, and in 6% of control subjects, the prevalence is significantly increased in the patients	729642	
3.1.1.53	A467V	naturally occuring mutation, the enzyme shows over 110% catalytic activity compared to the wild-type enzyme. The mutant is secreted upon overexpression	730718	
3.1.1.53	C196F	naturally occuring mutation, the mutant shows highly reduced catalytic activity compared with the wild-type enzyme	730718	
3.1.1.53	C443R	naturally occuring mutation	730718	
3.1.1.53	E26A	site-directed mutagenesis, the mutant shows highly reduced activity compared to the wild-type NanS	716859	
3.1.1.53	F211A	abrogated ligand recognition and binding	700987	
3.1.1.53	F404S	naturally occuring mutation	730718	
3.1.1.53	G419E	naturally occuring mutation	730718