TABLE 3

Comparison of CYP3A4 efficiency when sustained by ABS-CYPORs, using different in vitro systems and substrates

Bold indicates CYPOR variants of this present study with most deviating results compared with those of the Fluc̈k et al. (2010) and Agrawal et al. (2010) studies.

BTC3A4_PORkcat/Kma
Debenzylation DBFbDebenzylation BOMCCc6β-Hydroxylation Testosteroned1-Hydroxylation Midazolamd4-Hydroxylation Midazolamd3-Hydroxylation QuinidinedN-Demethylation Erythromycind
WT100100100100100100100
Q153R60119129949215076
Y181DN.D.N.D.e
D211N107
P228L95101
M263V119
A287P93261717143N.D.
G413S115110
R457H10N.D.N.D.N.D.N.D.N.D.
Y459HN.D.N.D.
V492EN.D.N.D.
G539R30
L565PN.D.
R616XN.D.N.D.
  • N.D., no activity detected.

  • a Percentage kcat/Km values relative to WT.

  • b Present study.

  • c Data from Flück et al. (2010).

  • d Data from Agrawal et al. (2010).

  • e —, CYPOR variant not evaluated.