Photocatalysis to promote cell-free biocatalytic reactions

Cofactors assist enzymes to catalyze reactions and are indispensable and ubiquitous in nature, playing a central role in metabolic pathways. In biocatalysis, common redox cofactors such as nicotinamide, flavin and heme can be activated by light or synthetized to vary redox potentials, leading to different types of reactions for the formation...

Chemoenzymatic Halocyclization of 4-Pentenoic Acid at Preparative Scale

The scale-up of chemoenzymatic bromolactonization to 100 g scale is presented, together with an identification of current limitations. The preparative-scale reaction also allowed for meaningful mass balances identifying current bottlenecks of the chemoenzymatic reaction.

Haloperoxidases as catalysts in organic synthesis

Haloperoxidases are very active catalysts for the in situ generation of electrophilic halide species for oxidative halogenation reactions. In the synthetic community, these catalysts, however, are not widely used. The aim of this mini-review is to critically summarise the current state-of-the-art of haloperoxidase catalysis for organic...

Synthetic biomimetic coenzymes and alcohol dehydrogenases for asymmetric catalysis

Redox reactions catalyzed by highly selective nicotinamide-dependent oxidoreductases are rising to prominence in industry. The cost of nicotinamide adenine dinucleotide coenzymes has led to the use of well-established elaborate regeneration systems and more recently alternative synthetic biomimetic cofactors. These biomimetics are highly...

A Photoenzymatic NADH Regeneration System

A photoenzymatic NADH regeneration system was established. The combination of deazariboflavin as a photocatalyst with putidaredoxin reductase enabled the selective reduction of NAD⁺ into the enzyme-active 1,4-NADH to promote an alcohol dehydrogenase catalysed stereospecific reduction reaction. The catalytic turnover of all the...