Comparison of salt- and heat-induced alterations of protein synthesis in the cyanobacterium Synechocystis sp. PCC 6803

1991 ◽  
Vol 155 (6) ◽  
pp. 587-592 ◽  
Author(s):  
Martin Hagemann ◽  
Dieter Techel ◽  
Ludger Rensing
Keyword(s):  
Protein Synthesis ◽  
Synechocystis Sp ◽  
Pcc 6803

scholarly journals Contribution of protein synthesis depression to poly-β-hydroxybutyrate accumulation in Synechocystis sp. PCC 6803 under nutrient-starved conditions

2019 ◽  
Vol 9 (1) ◽  
Author(s):  
Kazuho Hirai ◽  
Miki Nojo ◽  
Yosuke Sato ◽  
Mikio Tsuzuki ◽  
Norihiro Sato
Keyword(s):  
Protein Synthesis ◽  
Lipid Droplets ◽  
Carbon Sources ◽  
Cellular Proteins ◽  
Protein Synthesis Inhibitor ◽  
Wild Type ◽  
Synthesis Inhibitor ◽  
Synechocystis Sp ◽  
Pcc 6803

AbstractPoly-β-hydroxybutyrate (PHB) in cyanobacteria, which accumulates as energy and carbon sources through the action of photosynthesis, is expected to substitute for petroleum-based plastics. This study first demonstrated that PHB accumulation was induced, with the appearance of lipid droplets, in sulfur (S)-starved cells of a cyanobacterium, Synechocystis sp. PCC 6803, however, to a lower level than in nitrogen (N)- or phosphorus (P)-starved cells. Concomitantly found was repression of the accumulation of total cellular proteins in the S-starved cells to a similar level to that in N-starved cells, and a severer level than in P-starved cells. Intriguingly, PHB accumulation was induced in Synechocystis even under nutrient-replete conditions, upon repression of the accumulation of total cellular proteins through treatment of the wild type cells with a protein synthesis inhibitor, chloramphenicol, or through disruption of the argD gene for Arg synthesis. Meanwhile, the expression of the genes for PHB synthesis was hardly induced in S-starved cells, in contrast to their definite up-regulation in N- or P-starved cells. It therefore seemed that PHB accumulation in S-starved cells is achieved through severe repression of protein synthesis, but is smaller than in N- or P-starved cells, owing to little induction of the expression of PHB synthesis genes.

scholarly journals Cloning of the psbK gene from Synechocystis sp. PCC 6803 and characterization of photosystem II in mutants lacking PSII-K

1991 ◽  
Vol 266 (17) ◽  
pp. 11111-11115
Author(s):  
M. Ikeuchi ◽  
B. Eggers ◽  
G.Z. Shen ◽  
A. Webber ◽  
J.J. Yu ◽  
...  
Keyword(s):  
Photosystem Ii ◽  
Synechocystis Sp ◽  
Pcc 6803
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