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Properties of the Reactants and Their Interactions within and with the Enzyme Binding Cavity Determine Reaction Selectivities. The Case of Fe(II)/2-Oxoglutarate Dependent Enzymes

期刊

CHEMISTRY-A EUROPEAN JOURNAL
卷 28, 期 18, 页码 -

出版社

WILEY-V C H VERLAG GMBH
DOI: 10.1002/chem.202104106

关键词

2-oxoglutarate; Fe(II); reaction mechanism; regioselectivity; selectivity

资金

  1. National Science Centre, Poland [UMO-2014/14/E/NZ1/00053]
  2. ICSC PAS

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This article reviews the structure, catalytic mechanism, and selectivity of Fe(II)/2-oxoglutarate dependent dioxygenases (ODDs). ODDs accept a variety of substrates and facilitate various reactions, with selectivity depending on the inherent properties of the reactants and the interactions between the substrate and the enzyme's binding cavity.
Fe(II)/2-oxoglutarate dependent dioxygenases (ODDs) share a double stranded beta helix (DSBH) fold and utilise a common reactive intermediate, ferryl species, to catalyse oxidative transformations of substrates. Despite the structural similarities, ODDs accept a variety of substrates and facilitate a wide range of reactions, that is hydroxylations, desaturations, (oxa)cyclisations and ring rearrangements. In this review we present and discuss the factors contributing to the observed (regio)selectivities of ODDs. They span from inherent properties of the reactants, that is, substrate molecule and iron cofactor, to the interactions between the substrate and the enzyme's binding cavity; the latter can counterbalance the effect of the former. Based on results of both experimental and computational studies dedicated to ODDs, we also line out the properties of the reactants which promote reaction outcomes other than the default hydroxylation. It turns out that the reaction selectivity depends on a delicate balance of interactions between the components of the investigated system.

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