REDOX-LINKED CONFORMATION CHANGE AND ELECTRON TRANSFER BETWEEN MONOHEME C-TYPE CYTOCHROMES AND OXIDES
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dc.contributor.author | Khare N. | |
dc.contributor.author | Lovelace D.M. | |
dc.contributor.author | Eggleston C.M. | |
dc.contributor.author | Swenson M. | |
dc.contributor.author | Magnuson T.S. | |
dc.date.accessioned | 2024-04-29T04:07:40Z | |
dc.date.available | 2024-04-29T04:07:40Z | |
dc.date.issued | 2006 | |
dc.identifier | https://elibrary.ru/item.asp?id=12091677 | |
dc.identifier.citation | Geochimica et Cosmochimica Acta, 2006, 70, 17, 4332-4342 | |
dc.identifier.issn | 0016-7037 | |
dc.identifier.uri | https://repository.geologyscience.ru/handle/123456789/43757 | |
dc.description.abstract | Electron transfer between redox active proteins and mineral oxides is important in a variety of natural as well as technological processes, including electron transfer from dissimilatory metal-reducing bacteria to minerals. One of the pathways that could trigger electron transfer between proteins and minerals is redox-linked conformation change. We present electrochemical evidence that mitochondrial cytochrome c (Mcc) undergoes significant conformation change upon interaction with hematite and indium-tin oxide (ITO) surfaces. The apparent adsorption-induced conformation change causes the protein to become more reducing, which makes it able to transfer electrons to the hematite conduction band. Although Mcc is not a protein thought to be involved in interaction with mineral surfaces, it shares (or can be conformed so as to share) some characteristics with multiheme outer-membrane cytochromes thought to be involved in the transfer of electrons from dissimilatory iron-reducing bacteria to ferric minerals during respiration. We present evidence that a 10.1 kDa monohoeme cytochrome isolated and purified from Acidiphilium cryptum, with properties similar to those of Mcc, also undergoes conformation change as a result of interaction with hematite surfaces. | |
dc.subject | ADSORPTION | |
dc.subject | CYTOCHROME | |
dc.subject | ELECTRON | |
dc.subject | HEMATITE | |
dc.subject | OXIDE GROUP | |
dc.subject | REDOX CONDITIONS | |
dc.subject | ACIDIPHILIUM CRYPTUM | |
dc.title | REDOX-LINKED CONFORMATION CHANGE AND ELECTRON TRANSFER BETWEEN MONOHEME C-TYPE CYTOCHROMES AND OXIDES | |
dc.type | Статья | |
dc.identifier.doi | 10.1016/j.gca.2006.06.1561 |
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