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Article: Electron transfer between cytochrome c and porphyrins

TitleElectron transfer between cytochrome c and porphyrins
Authors
Issue Date1986
PublisherAmerican Chemical Society. The Journal's web site is located at http://pubs.acs.org/journals/jacsat/index.html
Citation
Journal Of The American Chemical Society, 1986, v. 108 n. 11, p. 2814-2818 How to Cite?
AbstractThe electron transfer between cytochrome c and several water-soluble porphyrins (ZnTPPS, ZnTMPyP, ZnTPPC, H2TPPS, and H2TMPyP where TPPS is tetrakis(sulfonatophenyl)porphyrin, TMPyP is tetrakis(N-methylpyridyl)porphyrin, and TPPC is tetrakis(carboxyphenyl)porphyrin) has been studied by the method of photoexcitation. For each porphyrin, two rates corresponding to electron transfer from porphyrin triplet to ferricytochrome c and from ferrocytochrome c to porphyrin cation radical are determined. The second-order rate constant increases from 3.5 × 108 to 11 × 108 M-1 s-1 (25°C, 0.5 M ionic strength, pH 7.0) as the driving force ΔE for the reaction increases from 0.54 to 1.06 V. A reorganization energy of 1.0 eV was deduced for the above electron-transfer reactions, when the rates (at infinite ionic strength) are analyzed according to the theories of Marcus and Hopfield. © 1986 American Chemical Society.
Persistent Identifierhttp://hdl.handle.net/10722/167289
ISSN
2015 Impact Factor: 13.038
2015 SCImago Journal Rankings: 7.123
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorCho, KCen_US
dc.contributor.authorChe, CMen_US
dc.contributor.authorNg, KMen_US
dc.contributor.authorChoy, CLen_US
dc.date.accessioned2012-10-08T03:05:18Z-
dc.date.available2012-10-08T03:05:18Z-
dc.date.issued1986en_US
dc.identifier.citationJournal Of The American Chemical Society, 1986, v. 108 n. 11, p. 2814-2818en_US
dc.identifier.issn0002-7863en_US
dc.identifier.urihttp://hdl.handle.net/10722/167289-
dc.description.abstractThe electron transfer between cytochrome c and several water-soluble porphyrins (ZnTPPS, ZnTMPyP, ZnTPPC, H2TPPS, and H2TMPyP where TPPS is tetrakis(sulfonatophenyl)porphyrin, TMPyP is tetrakis(N-methylpyridyl)porphyrin, and TPPC is tetrakis(carboxyphenyl)porphyrin) has been studied by the method of photoexcitation. For each porphyrin, two rates corresponding to electron transfer from porphyrin triplet to ferricytochrome c and from ferrocytochrome c to porphyrin cation radical are determined. The second-order rate constant increases from 3.5 × 108 to 11 × 108 M-1 s-1 (25°C, 0.5 M ionic strength, pH 7.0) as the driving force ΔE for the reaction increases from 0.54 to 1.06 V. A reorganization energy of 1.0 eV was deduced for the above electron-transfer reactions, when the rates (at infinite ionic strength) are analyzed according to the theories of Marcus and Hopfield. © 1986 American Chemical Society.en_US
dc.languageengen_US
dc.publisherAmerican Chemical Society. The Journal's web site is located at http://pubs.acs.org/journals/jacsat/index.htmlen_US
dc.relation.ispartofJournal of the American Chemical Societyen_US
dc.titleElectron transfer between cytochrome c and porphyrinsen_US
dc.typeArticleen_US
dc.identifier.emailChe, CM:cmche@hku.hken_US
dc.identifier.authorityChe, CM=rp00670en_US
dc.description.naturelink_to_subscribed_fulltexten_US
dc.identifier.doi10.1021/ja00271a005-
dc.identifier.scopuseid_2-s2.0-0000679819en_US
dc.identifier.volume108en_US
dc.identifier.issue11en_US
dc.identifier.spage2814en_US
dc.identifier.epage2818en_US
dc.identifier.isiWOS:A1986C602700005-
dc.publisher.placeUnited Statesen_US
dc.identifier.scopusauthoridCho, KC=15129672200en_US
dc.identifier.scopusauthoridChe, CM=7102442791en_US
dc.identifier.scopusauthoridNg, KM=7403178872en_US
dc.identifier.scopusauthoridChoy, CL=24287958600en_US

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