Publications by authors named "Dominika Luciakova"

Cytochrome P450 enzymes (P450s or CYPs) catalyze an enormous variety of oxidative reactions in organisms from all major domains of life. Their monooxygenase activity relies on the reductive scission of molecular oxygen (O2) bound to P450 heme iron, and thus on the delivery of two electrons to the heme iron at discrete points in the catalytic cycle. Early studies suggested that P450 redox partner machinery fell into only two major classes: either the eukaryotic diflavin enzyme NADPH-cytochrome P450 oxidoreductase, or bacterial/mitochondrial NAD(P)H-ferredoxin reductase and ferredoxin partners.

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The novel cytochrome P450/redox partner fusion enzyme CYP116B1 from Cupriavidus metallidurans was expressed in and purified from Escherichia coli. Isolated CYP116B1 exhibited a characteristic Fe(II)CO complex with Soret maximum at 449 nm. EPR and resonance Raman analyses indicated low-spin, cysteinate-coordinated ferric haem iron at both 10 K and ambient temperature, respectively, for oxidized CYP116B1.

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