TABLE 2

Enzyme kinetic parameter estimates obtained for hyodeoxycholic acid glucuronidation by human UGT2A3 variants (UGT2A3.1 and UGT2A3.2) expressed in SF21 insect cells

UGT2A3.1 UGT2A3.2
Estimate S.E. Estimate S.E.
Vmax (pmol/min/mg) 27 2 20 2
Km (μM) 69 7 44 12
Vmax/Km (ml/min/g) 0.40 0.04 0.46 0.13