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. Author manuscript; available in PMC: 2010 Jun 10.
Published in final edited form as: Regul Toxicol Pharmacol. 2009 Jan 23;53(3):195–204. doi: 10.1016/j.yrtph.2009.01.003

Table 2.

Metabolic Parameters used in the PBPK model for Rat and Human.

Variable Symbol Rat Liver Rat Optimized Human Liver
Hydroxylation Km (nM) KmOH 587,000A 587,000 124,000A
Vmax Hydroxylation (nmol/min/g protein) VmaxOH 8.33A 8.33 58.6A
Km Sulfoxidation (nM) KmSO 2,837,000A 360,000C 981,000A
Vmax Sulfoxidation (nmol/min/g protein) VmaxSO 638A 638 510A
Km GST conjugation (nM) KmGST1 305,500B 304,100 91,250B
Vmax GST Conjugation (nmol/min/g Cytosolic Protein) VmaxGST1 4,208B 5,383 323B