An NAD(P)H-Dependent artificial transfer hydrogenase for multienzymatic cascades

Yasunori Okamoto, Valentin Köhler, Thomas R. Ward

Research output: Contribution to journalArticlepeer-review

63 Citations (Scopus)


Enzymes typically depend on either NAD(P)H or FADH2 as hydride source for reduction purposes. In contrast, organometallic catalysts most often rely on isopropanol or formate to generate the reactive hydride moiety. Here we show that incorporation of a Cp∗Ir cofactor possessing a biotin moiety and 4,7-dihydroxy-1,10-phenanthroline into streptavidin yields an NAD(P)H-dependent artificial transfer hydrogenase (ATHase). This ATHase (0.1 mol%) catalyzes imine reduction with 1 mM NADPH (2 mol%), which can be concurrently regenerated by a glucose dehydrogenase (GDH) using only 1.2 equiv of glucose. A four-enzyme cascade consisting of the ATHase, the GDH, a monoamine oxidase, and a catalase leads to the production of enantiopure amines.

Original languageEnglish
Pages (from-to)5781-5784
Number of pages4
JournalJournal of the American Chemical Society
Issue number18
Publication statusPublished - 2016 May 11
Externally publishedYes

ASJC Scopus subject areas

  • Catalysis
  • Chemistry(all)
  • Biochemistry
  • Colloid and Surface Chemistry


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