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. 2020 Aug 28;42(2):311–322. doi: 10.1038/s41401-020-0481-8

Table 4.

Kinetic parameters of M1 sulaftion in human recombinant SULT1A1*1 and M1 glucuronidation in human recombinant UGT1A8.

Incubation system SULT1A1*1 UGT1A8
Protein concentration (mg protein/mL) 0.0250 0.100
Incubation time (min) 15.0 60.0
Concentration range (µM) 0.200–20.0 2.00–250
Km (µM) 3.68 63.6
Vmax (pmol·min−1·mg−1 protein) 44,391 548
Vmax/Km (µL·min−1·mg−1 protein) 12,062 8.61