Role of Ni(Fe)-macrostructures due to H-bonds in mechanisms of Ni(Fe)ARD action in methionine salvage pathway is discussed. The AFM method was used to research the possibility of the formation of stable supramolecular nanostructures based on Ni(Fe)ARD model systems {Ni(acac) 2 + L 2 + Tyr} (L 2 = NMP (NMP = N-Methyl-2-pirrolidone), His (His = L-Histidine), Tyr (Tyr = L-Tyrosine)-with the assistance of intermolecular H-bonds. In the course of scanning of investigated samples, it has been found that the structures based on model systems are fixed on a surface strongly enough due to H-bonding. The self-assembly-driven growth of the supramolecular structures on modified Silicone surface based on researched complexes, due to H-bonds and perhaps the other non-covalent interactions was observed.

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The possibility of the supramolecular nano structures formation on the basis of iron and nickel heteroligand complexes: Fe x (acac) y 18C6 m (H 2 O) n , and Fe x (acac) y (CTAB) p (H 2 O) q , or Ni 2 (OAc) 3 (acac)L 2 ·2H 2 O (L 2 = MP) − with the assistance of H-bonding, is researched using the AFM method. Formation of different supramolecular nanostructures on the basis of nickel and iron heteroligand complexes as models for Ni(Fe)ARD Dioxygenases may be used for understanding of different actions of these enzymes.

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