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A KaiC-associating SasA–RpaA two-component regulatory system as a major circadian timing mediator in cyanobacteria
TLDR
It is reported that RpaA, a potential DNA-binding protein that acts as a cognate response regulator of the KaiC-interacting kinase SasA, mediates between KaiC phosphorylation and global transcription rhythms, suggesting that multiple pathways ensure a genome-wide circadian system. Expand
Complete chloroplast DNA sequence of the moss Physcomitrella patens: evidence for the loss and relocation of rpoA from the chloroplast to the nucleus.
TLDR
The complete chloroplast DNA sequence (122 890 bp) of the moss Physcomitrella patens has been determined and the nuclear rpoA gene encoding the alpha subunit of RNA polymerase (RNAP) from P.patens is isolated and characterized, which indicates that chloroplasts RNAP is encoded separately by chlorOPlast and nuclear genomes in the moss. Expand
Cyanobacterial daily life with Kai-based circadian and diurnal genome-wide transcriptional control in Synechococcus elongatus
TLDR
The analysis revealed that dawn-expressed genes were up-regulated by kaiC-overexpression so that the clock was arrested at subjective dawn, indicating that the Synechococcus genome seems to be primarily regulated by light/dark cycles and is dramatically modified by the protein-based circadian oscillator. Expand
Complete nucleotide sequence of the freshwater unicellular cyanobacterium Synechococcus elongatus PCC 6301 chromosome: gene content and organization
TLDR
The entire genome of the unicellular cyanobacterium Synechococcus elongatus PCC 6301 (formerly Anacystis nidulans Berkeley strain 6301) was sequenced, suggesting that only simple signal transduction systems are found in this strain. Expand
DipM is required for peptidoglycan hydrolysis during chloroplast division
TLDR
The results suggest that the regulation of peptidoglycan splitting was essential for chloroplast division in the early evolution of chloroplasts and this activity is likely still involved in chloroplow division in Viridiplantae. Expand
The PPR‐DYW proteins are required for RNA editing of rps14, cox1 and nad5 transcripts in Physcomitrella patens mitochondria
TLDR
Two DYW subclass pentatricopeptide repeat (PPR) proteins seem to be site‐specific trans‐acting factors for RNA editing in the moss Physcomitrella patens. Expand
A PPR-DYW protein is required for splicing of a group II intron of cox1 pre-mRNA in Physcomitrella patens.
TLDR
Knockout mutants of the PpPPR_43 gene encodes a mitochondrial localized PPR protein with a C-terminal DYW domain that can be deleted without loss of cox1 intron 3 splicing, and RT-PCR analysis showed that the 3rd intron of coX1 pre-mRNA was not spliced out in the disruptants, which suggests that PPPPR-43 is an intron 2-specific splicing factor. Expand
A novel nucleic acid-binding protein in the cyanobacterium Synechococcus sp. PCC6301: a soluble 33-kDa polypeptide with high sequence similarity to ribosomal protein S1
TLDR
C Cyanobacteria are prokaryotes that carry out plant-type photosynthesis and contain several eukaryotic-type RNA-binding proteins, and a 33-kDa protein isolated and characterized is tentatively named nucleic acid-binding protein 1 (Nbp1), which is similar in overall structure to the ribosomal protein S1 found in the same species. Expand
A cyanobacterial non-coding RNA, Yfr1, is required for growth under multiple stress conditions.
TLDR
A high conservation of the yfr1 gene in most cyanobacterial lineages is found and it is suggested that the sbtA transcript is a target RNA for the Yfr1 RNA. Expand
Molecular Characterization of Three PRORP Proteins in the Moss Physcomitrella patens: Nuclear PRORP Protein Is Not Essential for Moss Viability
TLDR
Three PRORP-like proteins are identified and characterized in the basal land plant, the moss Physcomitrella patens, and displayed pre-tRNA 5′-end processing activity in vitro, suggesting that the two proteins have overlapping function but their substrate specificity is not identical. Expand
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