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dc.contributor.authorKhare, N.
dc.contributor.authorLovelace, D. M.
dc.contributor.authorEggleston, Carrick
dc.contributor.authorSwenson, M.
dc.contributor.authorMagnuson, T. S.
dc.contributor.authorKhare, N.
dc.contributor.authorLovelace, D. M.
dc.contributor.authorEggleston, Carrick
dc.contributor.authorSwenson, M.
dc.contributor.authorMagnuson, T. S.
dc.date2006-09-01
dc.date.accessioned2018-06-10T21:29:07Z
dc.date.available2018-06-10T21:29:07Z
dc.description©2006 Elsevier Inc. All rights reserved.
dc.description.abstractElectron 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 cytochrorne c (Mee) undergoes significant conformation change upon interaction with hematite and indiurn-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 cytochrorne 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.identifier.doi10.1016/j.gca.2006.06.1561
dc.identifier.urihttps://hdl.handle.net/20.500.11919/1100
dc.languageEnglish
dc.publisherUniversity of Wyoming. Libraries
dc.relation.ispartofFaculty Publication - Geology & Geophysics
dc.sourceGeology and Geophysics Faculty Publications
dc.subjectGeology
dc.titleRedox-Linked Conformation Change and Electron Transfer Between Monoheme C-Type Cytochromes and Oxides
dc.typeJournal contribution
dcterms.title.journalGeochimica Et Cosmochimica Acta
thesis.degree.disciplineGeology


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