Role of Supramolecular Strucutres in Mechanisms of Catalytic Oxidation and Action of Ni(Fe)ARD Dioxygenases on Model Systems

Matienko, L. I.; Binykov, Vladimir; Mil, E. M.; Заиков, Г. Е.

doi:10.23939/chcht14.03.304

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“…In the case of the two-component systems {Fe(acac)3+His}, we observed the formation of less distinct structures that were less stable. UV spectroscopy data have revealed the outer-sphere coordination of L-histidine (H-bond) with Fe(acac)3 [20]. The mechanism of action of FeARD, presumably, included the stage of O2-activation of Fe II +O2→Fe III -O2 − .…”

Section: Catalysis With Acireductone Dioxygenases Ni(fe)ardmentioning

confidence: 99%

Role of PhOH and Tyrosine in Selective Oxidation of Hydrocarbons

et al. 2021

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Earlier, we established that nickel or iron heteroligand complexes, which include PhOH (nickel complexes) or tyrosine residue (nickel or iron complexes), are not only hydrocarbon oxidation catalysts (in the case of PhOH), but also simulate the active centers of enzymes (PhOH, tyrosine). The AFM method established the self-organization of nickel or iron heteroligand complexes, which included tyrosine residue or PhOH, into supramolecular structures on a modified silicon surface. Supramolecular structures were formed as a result of H-bonds and other non-covalent intermolecular interactions and, to a certain extent, reflected the structures involved in the mechanisms of reactions of homogeneous and enzymatic catalysis. Using the AFM method, we obtained evidence at the model level in favor of the involvement of the tyrosine fragment as one of the possible regulatory factors in the functioning of Ni(Fe)ARD dioxygenases or monooxygenases of the family of cytochrome P450. The principles of actions of these oxygenases were used to create highly efficient catalytic systems for the oxidation of hydrocarbons.

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Section: Catalysis With Acireductone Dioxygenases Ni(fe)ardmentioning

confidence: 99%