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Table 2 Comparison of the effects of different reducing systems on ADO activity

From: Conversion of fatty aldehydes into alk (a/e)nes by in vitroreconstituted cyanobacterial aldehyde-deformylating oxygenase with the cognate electron transfer system

Reducing system

Yield of n-pentadecane (μM)

Chemical

PMS + NADH

8.6 ± 0.1

Biological

Fdspinach + FNRspinach + NADPH

15.7 ± 0.5

Fdspinach + FNRPCC7942 + NADPH

13.9 ± 0.4

FdPCC7942 + FNRspinach + NADPH

17.6 ± 0.3

 

FdPCC7942 + FNRPCC7942 + NADPH

20.0 ± 0.8

  1. The reaction mixtures contained 20 μM ADO 1593, 80 μM ferrous ammonium sulfate, 150 μM n-hexadecanal, 75 μM PMS and 750 μM NADH, or 10.26 μM Fd from spinach or PCC7942 and 1.8 μM FNR from spinach or PCC7942 and 2 mM NADPH, in 500 μL of 100 mM HEPES (pH 7.2) containing 0.1 M KCl and 10% glycerol. The reactions were incubated at room temperature for 1 hr at 200 rpm, and the products were extracted with 500 μL ethyl acetate for GC-MS analysis.