Browsing by Subject "Nitrites"
Now showing items 1-9 of 9
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Article
Coupling of helix E-F motion with the O-nitrito and 2-nitrovinyl coordination in myoglobin
(2017)Myoglobin (Mb) is known to react slowly with nitirite to form the green pigment by NO2 − cordination to the heme Fe in the O-binding nitrito (O1[sbnd]N[dbnd]O2) mode and to the heme 2-vinyl position. Nitrite is a powerful ...
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Article
Nitrite coordination in myoglobin
(2017)The coordination of nitrite in myoglobin (Mb) has been characterized by resonance Raman spectroscopy and the frequencies of the nitrite bound to the heme Fe as well to the 2-vinyl have been computed by density functional ...
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Article
Probing nitrite coordination in horseradish peroxidase by resonance Raman spectroscopy: Detection of two binding sites
(2017)Nitrite is a powerful oxidant that affects the activity of peroxidases towards various substrates and leads to heme macrocycle modifications in members of the peroxidase family, such as the horseradish peroxidase (HRP). ...
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Article
Probing the nitrite and nitric oxide reductase activity of cbb3 oxidase: Resonance Raman detection of a six-coordinate ferrous heme-nitrosyl species in the binuclear b3/CuB center
(2015)In this work we report the first spectroscopic evidence demonstrating that cbb3 oxidase catalyzes the reduction of nitrite to nitrous oxide under reducing anaerobic conditions. The reaction proceeds through the formation ...
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Article
Resonance Raman detection of the myoglobin nitrito heme Fe-O-N=O/2-nitrovinyl species: Implications for helix E-helix F interactions
(2015)The description of biological activity in heme proteins responsible for activating small molecules requires identification of ligand movement into the metal and non-metal binding sites. Mechanisms of nitrite reductase ...
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Article
The structure of a ferrous heme-nitro species in the binuclear heme a3/CuB center of ba3-cytochrome c oxidase as determined by resonance Raman spectroscopy
(2015)Members of the cytochrome c oxidase family exhibit nitrite reductase activity. In this work, we have characterized a ferrous heme a3-nitro species in ba3-oxidase by resonance Raman spectroscopy. This provides the first ...
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Article
The structure of the hyponitrite species in a heme Fe-Cu binuclear center
(2007)NO laughing matter: The enzymatic production of laughing gas (N 2O) from two molecules of NO requires the formation of the N-N bond and the subsequent cleavage of the N-OH bond. Resonance Raman spectroscopic studies have ...
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Doctoral Thesis Open Access
Εκλεκτική καταλυτική αναγωγή νιτρικών ιόντων (NO3) σε υδατικά μέσα σε στηριζόμενους καταλύτες Pd-Cu
(Πανεπιστήμιο Κύπρου, Σχολή Θετικών και Εφαρμοσμένων Επιστημών / University of Cyprus, Faculty of Pure and Applied Sciences, 2013-06)Στα πλαίσια της παρούσας Διδακτορικής Διατριβής πραγματοποιήθηκε σύνθεση, φυσικοχημικός χαρακτηρισμός και εκτεταμένη μελέτη της καταλυτικής συμπεριφοράς διμεταλλικών καταλυτών Pd-Cu στηριζόμενων σε σύνθετα οξειδικά υποστρώματα ...
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Doctoral Thesis
Μελέτη των αντιδράσεων υπεροξειδασών και αιμο-σφαιρινών με το νιτρώδες ιόν (NO2-) με τη χρήση φασματοσκοπίας συντονισμού Raman
(Πανεπιστήμιο Κύπρου, Σχολή Θετικών και Εφαρμοσμένων Επιστημών / University of Cyprus, Faculty of Pure and Applied Sciences, 2020-12)Τα νιτρώδη είναι ένας ισχυρός οξειδωτικός παράγοντας ο οποίος αλληλεπιδρά με τις αιμοπρωτεΐνες μέσω ποικίλων μονοπατιών. Αυτά τα μονοπάτια περιλαμβάνουν αντιδράσεις με τον αιμικό σίδηρο, τον σκελετό της αίμης και κατάλοιπα ...