Please use this identifier to cite or link to this item:
https://hdl.handle.net/20.500.14279/13677
Title: | Reversible temperature-dependent high- to low-spin transition in the heme Fe–Cu binuclear center of cytochrome ba3 oxidase | Authors: | Nicolaides, Antonis Soulimane, Tewfik Varotsis, Constantinos |
Major Field of Science: | Natural Sciences | Field Category: | Chemical Sciences | Keywords: | Barium alloys;Binary alloys;Calcium alloys;Copper alloys | Issue Date: | 2019 | Source: | RSC Advances, 2019, Vol. 9, No. 9, pp. 4776-4780 | Volume: | 9 | Issue: | 9 | Start page: | 4776 | End page: | 4780 | Journal: | RSC Advances | Abstract: | A reversible temperature-dependent high-spin to low-spin transition with T 1/2 =-60 °C has been observed in the resonance Raman spectra of the equilibrium reduced and photoreduced heme a 3 of the thermophilic ba 3 heme-copper oxidoreductase. The transition is based on the frequency shifts of the spin-state marker bands ν 2 (C b C b ) and ν 10 (C a C m ) and is attributed to the displacement of the heme iron along the heme normal as a consequence of the Fe-Np repulsion at temperature below-40 °C which will increase the ligand field strength forcing the pairing of d electrons into the lower energy orbitals. | ISSN: | 20462069 | DOI: | 10.1039/c8ra09954e | Rights: | © The Royal Society of Chemistry. | Type: | Article | Affiliation : | Cyprus University of Technology University of Limerick |
Publication Type: | Peer Reviewed |
Appears in Collections: | Άρθρα/Articles |
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