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. Author manuscript; available in PMC: 2019 Jun 5.
Published in final edited form as: Appl In Vitro Toxicol. 2018;4(4):365–378. doi: 10.1089/aivt.2017.0005

Table 3.

Kinetic parameters for in vitro biotransformation of phenanthrene, pyrene, and benzo[a]pyrene by trout liver S9 fractions

Phenanthrene Pyrene Benzo[a]pyrene
Log Kowa 4.47 4.88 6.13
KM (μM) 0.52 0.070 0.030
Vmax (pmol/min/mg protein) 22.5 40.9 28.7
CLin vitro,int (mL/h/mg protein) 2.6 35.1 57.4
a

Based on MLogP estimates (with preference given to measured values) in Bio-Loom for Windows.57