About: Trolox, a Water-Soluble Analogue of alpha-Tocopherol, Photoprotects the Surface-Exposed Regions of the Photosystem II Reaction Center in Vitro. Is This Physiologically Relevant?

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About: Trolox, a Water-Soluble Analogue of alpha-Tocopherol, Photoprotects the Surface-Exposed Regions of the Photosystem II Reaction Center in Vitro. Is This Physiologically Relevant? Goto Sponge NotDistinct Permalink

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
Description	Can Trolox, a water-soluble analogue of alpha-tocopherol and a scavenger of singlet oxygen ((1)O(2)), provide photoprotection, under high irradiance, to the isolated photosystem II (PSII) reaction center (RC)? To answer the question, we studied the endogenous production of (1)O(2) in preparations of the five-chlorophyll PSII RC (RCS) containing only one beta-carotene molecule. The temporal profile of (1)O(2) emission at 1270 nm photogenerated by RCS in D(2)O followed the expected biexponential behavior, with a rise time, unaffected by Trolox, of 13 +/- 1 mu s and decay times of 54 +/- 2 mu s (without Trolox) and 38 +/- 2 mu s (in the presence of 25 mu M Trolox). Can Trolox, a water-soluble analogue of alpha-tocopherol and a scavenger of singlet oxygen ((1)O(2)), provide photoprotection, under high irradiance, to the isolated photosystem II (PSII) reaction center (RC)? To answer the question, we studied the endogenous production of (1)O(2) in preparations of the five-chlorophyll PSII RC (RCS) containing only one beta-carotene molecule. The temporal profile of (1)O(2) emission at 1270 nm photogenerated by RCS in D(2)O followed the expected biexponential behavior, with a rise time, unaffected by Trolox, of 13 +/- 1 mu s and decay times of 54 +/- 2 mu s (without Trolox) and 38 +/- 2 mu s (in the presence of 25 mu M Trolox). (en)
Title	Trolox, a Water-Soluble Analogue of alpha-Tocopherol, Photoprotects the Surface-Exposed Regions of the Photosystem II Reaction Center in Vitro. Is This Physiologically Relevant? Trolox, a Water-Soluble Analogue of alpha-Tocopherol, Photoprotects the Surface-Exposed Regions of the Photosystem II Reaction Center in Vitro. Is This Physiologically Relevant? (en)
skos:prefLabel	Trolox, a Water-Soluble Analogue of alpha-Tocopherol, Photoprotects the Surface-Exposed Regions of the Photosystem II Reaction Center in Vitro. Is This Physiologically Relevant? Trolox, a Water-Soluble Analogue of alpha-Tocopherol, Photoprotects the Surface-Exposed Regions of the Photosystem II Reaction Center in Vitro. Is This Physiologically Relevant? (en)
skos:notation	RIV/60077344:_____/11:00367255!RIV12-AV0-60077344
http://linked.open...avai/predkladatel	Biologické centrum AV ČR, v. v. i.
http://linked.open...avai/riv/aktivita	V Z
http://linked.open...avai/riv/aktivity	V, Z(AV0Z50510513)
http://linked.open...iv/cisloPeriodika	39
http://linked.open...vai/riv/dodaniDat	2012
http://linked.open...aciTvurceVysledku	Vácha, František
http://linked.open.../riv/druhVysledku	J - Článek v odborném periodiku
http://linked.open...iv/duvernostUdaju	S - Úplné a pravdivé údaje nepodléhající ochraně podle zvláštních právních předpisů
http://linked.open...titaPredkladatele	Biologické centrum AV ČR, v. v. i.
http://linked.open...dnocenehoVysledku	236119
http://linked.open...ai/riv/idVysledku	RIV/60077344:_____/11:00367255
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	SINGLET OXYGEN SCAVENGER; PHOTOSENSITIZED OXIDATION; BETA-CAROTENE (en)
http://linked.open.../riv/klicoveSlovo	BETA-CAROTENE PHOTOSENSITIZED OXIDATION SINGLET OXYGEN SCAVENGER
http://linked.open...odStatuVydavatele	US - Spojené státy americké
http://linked.open...ontrolniKodProRIV	[B9694C0782E9]
http://linked.open...i/riv/nazevZdroje	Biochemistry
http://linked.open...in/vavai/riv/obor	CE
http://linked.open...ichTvurcuVysledku	1 (xsd:int)
http://linked.open...cetTvurcuVysledku	7 (xsd:int)
http://linked.open...UplatneniVysledku	2011
http://linked.open...v/svazekPeriodika	50
http://linked.open...iv/tvurceVysledku	Vácha, František Arellano, J. B. Gonzalez-Perez, S. Gutierrez, J. Li, H. Melo, T.B. Naqvi, K. R.
http://linked.open...ain/vavai/riv/wos	000295187200005
http://linked.open...n/vavai/riv/zamer	Výzkum struktury genetické informace rostlin a jejich patogenů na molekulární úrovni, indukce a analýza cílených změn genomu a plastomu a studium fotosyntetických procesů a projevů dědičnosti v interakci s prostředím a patogeny
issn	0006-2960
number of pages	11 (xsd:int)
http://bibframe.org/vocab/doi	10.1021/bi201195u
is http://linked.open...avai/riv/vysledek of	Trolox, a Water-Soluble Analogue of alpha-Tocopherol, Photoprotects the Surface-Exposed Regions of the Photosystem II Reaction Center in Vitro. Is This Physiologically Relevant? Trolox, a Water-Soluble Analogue of alpha-Tocopherol, Photoprotects the Surface-Exposed Regions of the Photosystem II Reaction Center in Vitro. Is This Physiologically Relevant?

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