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. Author manuscript; available in PMC: 2020 Jan 8.
Published in final edited form as: Biochemistry. 2019 May 23;58(22):2617–2627. doi: 10.1021/acs.biochem.9b00303

Table 2.

Steady-state Kinetic Parameters for Fused 4-OT with Indicated Substrates.a

Substrate kcat
(s−1)
Km
(μM)
kcat/Kmb
(M−1 s−1)
2-HM 580 ± 25 208 ± 16 2.8 × 106
5-Me-2-HM 72 ± 2 147 ± 9 4.9 × 105
PP 136 ± 8 720 ± 75 1.9 × 105
HPD 170 ± 12 1330 ± 140 1.3 × 105
CHM - - 2.3 × 103
a

The kinetic parameters were measured using the assay described in the text.