Table 1. Comparison of α-L-iduronidase enzyme activity in liver of heterozygous mice from different studies.

Enzyme levels were divided by 2 if only values in wild type mice were provided in the original paper (α-L-iduronidase enzyme activity in heterozygous mice are approximately half of that in wild-type individuals).

IDUA activity (nmol/h/mg)	Final [S] (μM)	Substrate source	Adjustment	Incubation time (hour)	Reaction temperature(°C)	Ref.
0.8	25	CalBiochem	N	1	22	[2]
2	25	CalBiochem	N	1	22	[3]
0.3	25	Glycosynth	N	1	37	[4]
0.6	25	Glycosynth	N	1	37	[5]
0.8	25	Glycosynth	N	1	37	[6]
2.5	25	Glycosynth	N	1	37	[7]
2.1	50	CalBiochem	N	1–6	37	[8]
0.8	50	TRC	N	6–8	37	[9]
1.6	50	TRC	N	6–8	37	[10]
6	50	CalBiochem	N	6–8	37	[11]
6.6	1000	CalBiochem	N	17	37	[12]
0.9	1425	CalBiochem	N	6	37	[13]
2.8	1425	Glycosynth	N	6	37	[14]
6	1425	Glycosynth	N	6	37	[15]
4.4	180	Glycosynth	Y	0.5	37	This study

N=NO, Y=YES.