New artificial biomimetic enzyme analogues based on iron(II/III) Schiff Base complexes: an effect of (benz)imidazole organic moieties on phenoxazinone synthase and DNA recognition
New artificial biomimetic enzyme analogues based on iron(II/III) Schiff Base complexes: an effect of (benz)imidazole organic moieties on phenoxazinone synthase and DNA recognition(355 views) Bocian A, Szymańska M, Brykczyńska D, Kubicki M, Wałęsa-chorab M, Roviello GN, Fik-jaskółka MA, Gorczyński A, Patroniak V
Molecules (ISSN: 1420-3049linking, 1420-3049electronic), 2019 Aug 31; 24(17): 3173-3173.
Keywords: 2-Aminophenol
, Dna Binding
, Schiff Base
, Biomimetic Activity
, Iron, Aminophenols Metabolism
, Animals
, Benzimidazoles Chemistry
, Competitive
, Biomimetic Materials Chemistry
, Catalysis
, Cattle
, Dna Metabolism
, Fluorescence
, Iron Chemistry
, Kinetics
, Ligands
, Oxazines
, Oxidation-Reduction
, Oxidoreductases Metabolism
, Schiff Bases Chemical Synthesis Chemistry
, Transition Elements Metabolism,
Affiliations: *** IBB - CNR ***
Faculty of Chemistry, Adam Mickiewicz University, Uniwersytetu Poznanskiego 8, 61-614 Poznan, Poland.
Institute of Biostructures and Bioimaging - CNR, via Mezzocannone 16, 80134 Napoli, Italy.
References: Not available.
New artificial biomimetic enzyme analogues based on iron(II/III) Schiff Base complexes: an effect of (benz)imidazole organic moieties on phenoxazinone synthase and DNA recognition
Elucidation of the structure and function of biomolecules provides us knowledge that can be transferred into the generation of new materials and eventually applications in e.g., catalysis or bioassays. The main problems, however, concern the complexity of the natural systems and their limited availability, which necessitates utilization of simple biomimetic analogues that are, to a certain degree, similar in terms of structure and thus behaviour. We have, therefore, devised a small library of six tridentate
N
-heterocyclic coordinating agents (
L
1
–
L
6
), which, upon complexation, form two groups of artificial, monometallic non-heme iron species. Utilization of iron(III) chloride leads to the formation of the 1:1 (Fe:
L
n
) ‘open’ complexes, whereas iron(II) trifluoromethanosulfonate allows for the synthesis of 1:2 (M:
L
n
) ‘closed’ systems. The structural differences between the individual complexes are a result of the information encoded within the metallic centre and the chosen counterion, whereas the organic scaffold influences the observed properties. Indeed, the number and nature of the external hydrogen bond donors coming from the presence of (benz)imidazole moieties in the ligand framework are responsible for the observed biological behaviour in terms of mimicking
phenoxazinone
synthase
activity and interaction with DNA.
New artificial biomimetic enzyme analogues based on iron(II/III) Schiff Base complexes: an effect of (benz)imidazole organic moieties on phenoxazinone synthase and DNA recognition
New artificial biomimetic enzyme analogues based on iron(II/III) Schiff Base complexes: an effect of (benz)imidazole organic moieties on phenoxazinone synthase and DNA recognition