PSBQA cDNA ORF clone, Arabidopsis thaliana(thale cress)

Sequence and analysis of chromosome 4 of the plant Arabidopsis thaliana.
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Nature402(6763)769-77(1999 Dec)

Complete elimination of PsbQ has a minor effect on photosystem II (PSII) function, but plants lacking PsbR or both PsbR and PsbQ are characterized by more pronounced defects in PSII activity.
Title: Arabidopsis plants lacking PsbQ and PsbR subunits of the oxygen-evolving complex show altered PSII super-complex organization and short-term adaptive mechanisms.

Results indicate that the loss of the PsbQ protein induces significant changes in Photosystem II function, particularly in low light-grown plants, and that the PsbQ protein is required for photoautotrophic growth under low light conditions.
Title: The PsbQ protein is required in Arabidopsis for photosystem II assembly/stability and photoautotrophy under low light conditions.