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Stress responses of the unicellular cyanobacterium Synechocystis involve several regulatory systems, including two-component ones, and negative supercoiling of genomic DNA. The role of serine/threonine protein kinases (STPKs) in the cold response was studied in Synechocystis. A screening of a collection of STPK mutants identified four enzymes—SpkB, SpkD, SpkE, and SpkG—as possible transcriptional...
Plants, algae, and photosynthetic bacteria experience frequent changes in environment. The ability to survive depends on their capacity to acclimate to such changes. In particular, fluctuations in temperature affect the fluidity of cytoplasmic and thylakoid membranes. The molecular mechanisms responsible for the perception of changes in membrane fluidity have not been fully characterized. However,...
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