The reduction potential of the beta-carotene.+ /beta-carotene couple in an aqueous micro-heterogeneous environment.

2.50
Hdl Handle:
http://hdl.handle.net/10541/88048
Title:
The reduction potential of the beta-carotene.+ /beta-carotene couple in an aqueous micro-heterogeneous environment.
Authors:
Edge, Ruth; Land, Edward J; McGarvey, David J; Burke, Marc; Truscott, T G
Abstract:
There is a resurgence of interest in the role of electron transfer reactions involving beta-carotene in photosynthesis. There is also current debate on the health benefits of dietary carotenoids and the possible deleterious effects on certain sub-populations such as smokers. The impact of dietary carotenoids on health may well be also related to radical reactions. A key parameter in biological systems is therefore the one-electron reduction potential of the carotenoid radical cation, now reported for the first time in a model biological aqueous environment. The value obtained is 1.06+/-0. 01 V and is sufficiently high to oxidise cell membrane proteins, but is low enough to repair P(680).+ in the photosynthetic reaction centre.
Affiliation:
School of Chemistry and Physics, Lennard-Jones Laboratories, Keele University, Keele, UK.
Citation:
The reduction potential of the beta-carotene.+ /beta-carotene couple in an aqueous micro-heterogeneous environment. 2000, 471 (2-3):125-7 FEBS Lett.
Journal:
FEBS letters
Issue Date:
14-Apr-2000
URI:
http://hdl.handle.net/10541/88048
PubMed ID:
10767406
Type:
Article
Language:
en
ISSN:
0014-5793; 10.1016/S0014-5793(00)01366-1
Appears in Collections:
All Paterson Institute for Cancer Research

Full metadata record

DC FieldValue Language
dc.contributor.authorEdge, Ruthen
dc.contributor.authorLand, Edward Jen
dc.contributor.authorMcGarvey, David Jen
dc.contributor.authorBurke, Marcen
dc.contributor.authorTruscott, T Gen
dc.date.accessioned2009-12-15T17:24:46Z-
dc.date.available2009-12-15T17:24:46Z-
dc.date.issued2000-04-14-
dc.identifier.citationThe reduction potential of the beta-carotene.+ /beta-carotene couple in an aqueous micro-heterogeneous environment. 2000, 471 (2-3):125-7 FEBS Lett.en
dc.identifier.issn0014-5793-
dc.identifier.issn10.1016/S0014-5793(00)01366-1-
dc.identifier.pmid10767406-
dc.identifier.urihttp://hdl.handle.net/10541/88048-
dc.description.abstractThere is a resurgence of interest in the role of electron transfer reactions involving beta-carotene in photosynthesis. There is also current debate on the health benefits of dietary carotenoids and the possible deleterious effects on certain sub-populations such as smokers. The impact of dietary carotenoids on health may well be also related to radical reactions. A key parameter in biological systems is therefore the one-electron reduction potential of the carotenoid radical cation, now reported for the first time in a model biological aqueous environment. The value obtained is 1.06+/-0. 01 V and is sufficiently high to oxidise cell membrane proteins, but is low enough to repair P(680).+ in the photosynthetic reaction centre.en
dc.language.isoenen
dc.subject.meshCations-
dc.subject.meshCysteine-
dc.subject.meshElectron Transport-
dc.subject.meshFree Radicals-
dc.subject.meshHydrogen-Ion Concentration-
dc.subject.meshMicelles-
dc.subject.meshOxidants-
dc.subject.meshPhotosynthetic Reaction Center Complex Proteins-
dc.subject.meshPulse Radiolysis-
dc.subject.meshReducing Agents-
dc.subject.meshSolutions-
dc.subject.meshSpectrophotometry, Infrared-
dc.subject.meshThermodynamics-
dc.subject.meshTryptophan-
dc.subject.meshTyrosine-
dc.subject.meshWater-
dc.subject.meshbeta Carotene-
dc.titleThe reduction potential of the beta-carotene.+ /beta-carotene couple in an aqueous micro-heterogeneous environment.en
dc.typeArticleen
dc.contributor.departmentSchool of Chemistry and Physics, Lennard-Jones Laboratories, Keele University, Keele, UK.en
dc.identifier.journalFEBS lettersen

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