Browsing Τμήμα Χημείας / Department of Chemistry by Author "Ioannou, Androulla"
Now showing items 1-6 of 6
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Article
Coupling of helix E-F motion with the O-nitrito and 2-nitrovinyl coordination in myoglobin
Ioannou, Androulla; Lambrou, Alexandra; Daskalakis, Vangelis; Pinakoulaki, Eftychia (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
Ioannou, Androulla; Lambrou, Alexandra; Daskalakis, Vangelis; Pinakoulaki, Eftychia (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
Ioannou, Androulla; Pinakoulaki, Eftychia (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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Resonance Raman detection of the heme Fe(II)-NO/2-nitrovinyl species in myoglobin
Ioannou, Androulla; Pinakoulaki, Eftychia (2018)The six-coordinate heme Fe(II)-NO/2-nitrovinyl species in myoglobin has been detected and characterized by resonance Raman spectroscopy. The Fe(II)-14NO and 15N-O stretching frequencies of the ferrous heme nitrosyl/2-nitrovinyl ...
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Article
Spin Crossover in Nitrito-Myoglobin as Revealed by Resonance Raman Spectroscopy
Lambrou, Alexandra; Ioannou, Androulla; Pinakoulaki, Eftychia (2016)The myoglobin (Mb) heme Fe-O-N=O and heme Fe-O-N=O/2-nitrovinyl species have been characterized by resonance Raman spectroscopy. In the heme Fe-O-N=O species, the bound nitrite ligand is removed by solvent exchange, thus ...
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Article
Spin Crossover in Nitrito‐Myoglobin as Revealed by Resonance Raman Spectroscopy
Lambrou, Alexandra; Ioannou, Androulla; Pinakoulaki, Eftychia (2016)