2.6.1.44	denaturation of enzyme with guanidine-HCl and re-folding, complete renaturation. Mutations G41V and G41R, associated with primary hyperoxaluria type I, show enhanced activity after re-folding. Pyridoxal 5’-phosphate is not required for proper re-folding	663312	
2.6.1.44	quick dilution (100fold) to an urea concentration that would be expected to support native enzyme, only about 20 and 5% of activity is recovered for major allele (P11/I340) and P11L/I340M (minor allele, respectively)	721754