Thermoluminescence evidence for light-induced oxidation of tyrosine and histidine residues in manganese-depleted photosystem II particles

Suleyman I. Allakhverdiev; Vyacheslav V. Klimov; Sandor Demeter

doi:10.1016/0014-5793(92)80325-B

Thermoluminescence evidence for light-induced oxidation of tyrosine and histidine residues in manganese-depleted photosystem II particles

Suleyman I. Allakhverdiev, Vyacheslav V. Klimov, Sandor Demeter

Research output: Contribution to journal › Article › peer-review

20 Citations (Scopus)

Abstract

In the thermoluminescence (TL) glow curve of photosystem II, particles depleted of manganese, a tyrosine modifier, 7-chloro-4-nitrobenz-2-oxa-1,3-diazole (NBD) a bolishes the TL band appearing around -55°C (TL_-55). Addition of a histidine modifier, diethylpyrocarbonate results in the disappearance of the band peaking around -30°C (TL_-30). NBD treatment also abolishes the EPR signal II_fast of oxidized tyrosine donor, Y₂₁ and inhibits the electron transport from diphenylcarbazide to 2,6-dichlorophenol-indophenol. It is concluded that the TL_-55 and TL_-30 bands can be assigned to oxidized tyrosine (Y₂⁺) and histidine (His⁺) residues, respectively, which participate in electron transfer from manganese to the reaction center of chlorophyll, P680⁺.

Original language	English
Pages (from-to)	51-54
Number of pages	4
Journal	FEBS Letters
Volume	297
Issue number	1-2
DOIs	https://doi.org/10.1016/0014-5793(92)80325-B
Publication status	Published - Feb 3 1992

Keywords

Electron transport
Histidine
Manganese-depletion
Photosystem II
Thermoluminescence
Tyrosine

ASJC Scopus subject areas

Biophysics
Structural Biology
Biochemistry
Molecular Biology
Genetics
Cell Biology

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10.1016/0014-5793(92)80325-B

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title = "Thermoluminescence evidence for light-induced oxidation of tyrosine and histidine residues in manganese-depleted photosystem II particles",

abstract = "In the thermoluminescence (TL) glow curve of photosystem II, particles depleted of manganese, a tyrosine modifier, 7-chloro-4-nitrobenz-2-oxa-1,3-diazole (NBD) a bolishes the TL band appearing around -55°C (TL-55). Addition of a histidine modifier, diethylpyrocarbonate results in the disappearance of the band peaking around -30°C (TL-30). NBD treatment also abolishes the EPR signal IIfast of oxidized tyrosine donor, Y21 and inhibits the electron transport from diphenylcarbazide to 2,6-dichlorophenol-indophenol. It is concluded that the TL-55 and TL-30 bands can be assigned to oxidized tyrosine (Y2+) and histidine (His+) residues, respectively, which participate in electron transfer from manganese to the reaction center of chlorophyll, P680+.",

keywords = "Electron transport, Histidine, Manganese-depletion, Photosystem II, Thermoluminescence, Tyrosine",

author = "Allakhverdiev, {Suleyman I.} and Klimov, {Vyacheslav V.} and Sandor Demeter",

year = "1992",

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doi = "10.1016/0014-5793(92)80325-B",

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T1 - Thermoluminescence evidence for light-induced oxidation of tyrosine and histidine residues in manganese-depleted photosystem II particles

AU - Allakhverdiev, Suleyman I.

AU - Klimov, Vyacheslav V.

AU - Demeter, Sandor

PY - 1992/2/3

Y1 - 1992/2/3

N2 - In the thermoluminescence (TL) glow curve of photosystem II, particles depleted of manganese, a tyrosine modifier, 7-chloro-4-nitrobenz-2-oxa-1,3-diazole (NBD) a bolishes the TL band appearing around -55°C (TL-55). Addition of a histidine modifier, diethylpyrocarbonate results in the disappearance of the band peaking around -30°C (TL-30). NBD treatment also abolishes the EPR signal IIfast of oxidized tyrosine donor, Y21 and inhibits the electron transport from diphenylcarbazide to 2,6-dichlorophenol-indophenol. It is concluded that the TL-55 and TL-30 bands can be assigned to oxidized tyrosine (Y2+) and histidine (His+) residues, respectively, which participate in electron transfer from manganese to the reaction center of chlorophyll, P680+.

AB - In the thermoluminescence (TL) glow curve of photosystem II, particles depleted of manganese, a tyrosine modifier, 7-chloro-4-nitrobenz-2-oxa-1,3-diazole (NBD) a bolishes the TL band appearing around -55°C (TL-55). Addition of a histidine modifier, diethylpyrocarbonate results in the disappearance of the band peaking around -30°C (TL-30). NBD treatment also abolishes the EPR signal IIfast of oxidized tyrosine donor, Y21 and inhibits the electron transport from diphenylcarbazide to 2,6-dichlorophenol-indophenol. It is concluded that the TL-55 and TL-30 bands can be assigned to oxidized tyrosine (Y2+) and histidine (His+) residues, respectively, which participate in electron transfer from manganese to the reaction center of chlorophyll, P680+.

KW - Electron transport

KW - Histidine

KW - Manganese-depletion

KW - Photosystem II

KW - Thermoluminescence

KW - Tyrosine

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VL - 297

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JO - FEBS Letters

JF - FEBS Letters

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ER -

Thermoluminescence evidence for light-induced oxidation of tyrosine and histidine residues in manganese-depleted photosystem II particles

Abstract

Keywords

ASJC Scopus subject areas

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