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A nuclear-encoded sigma factor, Arabidopsis SIG6, recognizes sigma-70 type chloroplast promoters and regulates early chloroplast development in cotyledons.
TLDR
Northern and array-based global analyses for plastid transcripts revealed that the transcript levels of most PEP-dependent genes were greatly reduced in the sig6-1 mutant, but that the accumulation of nuclear-encoded RNA polymerase (NEP)-dependent transcripts generally increased. Expand
Plastid RNA polymerases, promoters, and transcription regulators in higher plants.
TLDR
This review summarizes state-of-the-art knowledge of molecular mechanisms that regulate plastid transcription in higher plants and identifies several new players involved in transcriptional regulation in plastids. Expand
Blue light-induced transcription of plastid-encoded psbD gene is mediated by a nuclear-encoded transcription initiation factor, AtSig5.
TLDR
It is proposed that AtSig5 acts as a mediator of blue light signaling that specifically activates the psbD BLRP in response to blue light in Arabidopsis. Expand
Blue light specific and differential expression of a plastid σ factor, Sig5 in Arabidopsis thaliana
TLDR
It is found that blue light extensively induced the accumulation of SIG5 transcripts, but red light did not and the blue light specificity was not observed in the accumulations of remaining five SIG genes. Expand
Multiple Rieske Proteins Enable Short- and Long-term Light Adaptation of Synechocystis sp. PCC 6803*
TLDR
The data suggest defined roles of the various PetC proteins in short- and long-term light adaptation, and the presence of PetC3 appears to be required for activation of the cyclic electron transport, state transitions were more effective in the absence of petC2 and/or PetC 3. Expand
Developmental stage-specific multi-subunit plastid RNA polymerases (PEP) in wheat.
TLDR
During wheat leaf development, PEP in the leaf base that is functional for most PEP promoters even in the dark is replaced by the light-dependent PEP selectively transcribing the psbA and psbD promoters. Expand
Circadian‐regulated expression of a nuclear‐encoded plastid σ factor gene (sigA) in wheat seedlings
TLDR
Accumulation of the sigA mRNA was found to be regulated by a circadian clock, while rpoA mRNA did not show any significant oscillation throughout the experiment. Expand
Two novel nuclear genes, OsSIG5 and OsSIG6, encoding potential plastid sigma factors of RNA polymerase in rice: tissue-specific and light-responsive gene expression.
TLDR
Results indicated that OsSig5 is a plastid sigma factor in crops, the first report of the Sig5-type sigma factors in crops. Expand
Structure of a thermophilic cyanobacterial b6f-type Rieske protein.
TLDR
Overexpression and careful structure analysis at 2.0 Å resolution of the extrinsic soluble domain of PetC from the thermophilic cyanobacterium Thermosynechococcus elongatus BP-1 enabled in-depth spectroscopic and structural characterization and suggested novel structural features. Expand
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