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. Author manuscript; available in PMC: 2015 Aug 15.
Published in final edited form as: Biochem J. 2014 Aug 15;462(1):163–171. doi: 10.1042/BJ20140220

Figure 2. Macroscopic kinetic events in AKR1D1 catalysis.

Figure 2

The turnover number (kcat) is defined by the rate constants of three steps: the chemistry step (kchem), the release of steroid product (kr,Sp) and the release of NADP+ (k r,NADP +). E, enzyme; SS, steroid substrate; SP, steroid product.