Characterisation of the PsbX protein from Photosystem II and light regulation of its gene expression in higher plants

Lan Xin Shi; Soo J. Kim; Alan Marchant; Colin Robinson; Wolfgang P. Schröder

doi:10.1023/A:1006286706708

Characterisation of the PsbX protein from Photosystem II and light regulation of its gene expression in higher plants

Lan Xin Shi, Soo J. Kim, Alan Marchant, Colin Robinson, Wolfgang P. Schröder

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

19 Scopus citations

Abstract

The location and expression of the previously uncharacterised photosystem II subunit PsbX have been analysed in higher plants. We show that this protein is a component of photosystem II (PSII) core particles but absent from light-harvesting complexes or PSII reaction centres. PsbX is, however, localised to the near vicinity of the reaction centre because it can be cross-linked to cytochrome b559, which is known to be associated with the D1/D2 dimer. We also show that the expression of this protein is tightly regulated by light, since neither protein nor mRNA is found in dark-grown plants.

Original language	English (US)
Pages (from-to)	737-744
Number of pages	8
Journal	Plant Molecular Biology
Volume	40
Issue number	4
DOIs	https://doi.org/10.1023/A:1006286706708
State	Published - Jul 1999
Externally published	Yes

Keywords

4.1 kDa protein
Arabidopsis thaliana
Low-molecular-mass proteins
Photosystem II
PsbX
Spinach

ASJC Scopus subject areas

Genetics
Agronomy and Crop Science
Plant Science

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title = "Characterisation of the PsbX protein from Photosystem II and light regulation of its gene expression in higher plants",

abstract = "The location and expression of the previously uncharacterised photosystem II subunit PsbX have been analysed in higher plants. We show that this protein is a component of photosystem II (PSII) core particles but absent from light-harvesting complexes or PSII reaction centres. PsbX is, however, localised to the near vicinity of the reaction centre because it can be cross-linked to cytochrome b559, which is known to be associated with the D1/D2 dimer. We also show that the expression of this protein is tightly regulated by light, since neither protein nor mRNA is found in dark-grown plants.",

keywords = "4.1 kDa protein, Arabidopsis thaliana, Low-molecular-mass proteins, Photosystem II, PsbX, Spinach",

author = "Shi, {Lan Xin} and Kim, {Soo J.} and Alan Marchant and Colin Robinson and Schr{\"o}der, {Wolfgang P.}",

note = "Funding Information: We thank Dr A.V. Vener for providing the sample of cytochrome b6/f complexes. The financial support by the Swedish Natural Science Research Council and the Carl Trygger Foundation is gratefully acknowledged.",

year = "1999",

month = jul,

doi = "10.1023/A:1006286706708",

language = "English (US)",

volume = "40",

pages = "737--744",

journal = "Plant Molecular Biology",

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publisher = "Springer Netherlands",

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TY - JOUR

T1 - Characterisation of the PsbX protein from Photosystem II and light regulation of its gene expression in higher plants

AU - Shi, Lan Xin

AU - Kim, Soo J.

AU - Marchant, Alan

AU - Robinson, Colin

AU - Schröder, Wolfgang P.

N1 - Funding Information: We thank Dr A.V. Vener for providing the sample of cytochrome b6/f complexes. The financial support by the Swedish Natural Science Research Council and the Carl Trygger Foundation is gratefully acknowledged.

PY - 1999/7

Y1 - 1999/7

N2 - The location and expression of the previously uncharacterised photosystem II subunit PsbX have been analysed in higher plants. We show that this protein is a component of photosystem II (PSII) core particles but absent from light-harvesting complexes or PSII reaction centres. PsbX is, however, localised to the near vicinity of the reaction centre because it can be cross-linked to cytochrome b559, which is known to be associated with the D1/D2 dimer. We also show that the expression of this protein is tightly regulated by light, since neither protein nor mRNA is found in dark-grown plants.

AB - The location and expression of the previously uncharacterised photosystem II subunit PsbX have been analysed in higher plants. We show that this protein is a component of photosystem II (PSII) core particles but absent from light-harvesting complexes or PSII reaction centres. PsbX is, however, localised to the near vicinity of the reaction centre because it can be cross-linked to cytochrome b559, which is known to be associated with the D1/D2 dimer. We also show that the expression of this protein is tightly regulated by light, since neither protein nor mRNA is found in dark-grown plants.

KW - 4.1 kDa protein

KW - Arabidopsis thaliana

KW - Low-molecular-mass proteins

KW - Photosystem II

KW - PsbX

KW - Spinach

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JO - Plant Molecular Biology

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ER -

Characterisation of the PsbX protein from Photosystem II and light regulation of its gene expression in higher plants

Abstract

Keywords

ASJC Scopus subject areas

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