The concepts of cell theory and the notions of coordinate regulation of the cell cycle have been known for centuries but the conundrum of coordinate regulation of the cell cycle remains to be resolved. The unique characteristics of the cell division cycle of Synechococcus, a photosynthetic bacterium, suggest the existence of a complex network of light/dark responsive gene regulatory factors tha...

This talk will provide an update on the progress to date of the Genomics:GTL project led by Sandia National Laboratories: " Carbon Sequestration in Synechococcus sp.: From Molecular Machines to Hierarchical Modeling. " This effort is focused on developing, prototyping, and applying new computational tools and methods to elucidate the biochemical mechanisms of the carbon sequestration of Synecho...

PSII-X is a small hydrophobic protein, which is universally present in photosystem II (PSII) core complex among cyanobacteria and plants. The role of PSII-X was studied by directed mutagenesis and biochemical analysis in the thermophilic cyanobacterium Synechococcus elongatus. The psbX-disrupted mutant could grow photoautotrophically indicative of non-essential function, while it showed growth ...

Synechococcus is one of the most abundant prokaryotic photosynthetic organisms on Earth and plays a key role in oceanic carbon fixation transformation. To improve efficiency synechococcus , post-transcriptional regulatory mechanism - Selective RNA Processing Stabilization (SRPS) was considered. We inactivated SRPS-enzymes, executor SRPS mechanism, to explore their regulation rule . The results ...

The phosphorus-limited growth kinetics of the chlorophyte Scenedesmus quadricauda and the cyanophyte Synechococcus Nägeli were studied by using batch and continuous culturing techniques. The steady-state phosphate transport capability and the phosphorus storage capacity is higher in S. Nägeli than in S. quadricauda. Synechococcus Nägeli can also deplete phosphate to much lower levels than can S...

We have determined the complete nucleotide sequence of pAQ1, the smallest plasmid of the unicellular marine cyanobacterium Synechococcus sp. PCC7002. The plasmid consists of 4,809 bp and has at least four open reading frames that potentially encode polypeptides of 50 or more amino acids. We found that a palindromic element, the core sequence of which is G(G/A)CGATCGCC, is over-represented not o...

We report here four draft genome sequences belonging to clade F of the cyanobacterium "Candidatus Synechococcus spongiarum" of the marine sponge Aplysina aerophoba, which were collected from two nearby locations in the northern Adriatic Sea. The sequences provide the basis for within-clade comparisons between members of this widespread group of cyanobacterial sponge symbionts.

SwmB is required for swimming motility in Synechococcus sp. strain WH8102. This highly repetitive 1.12-MDa polypeptide is associated with the cell surface, where it is arranged in a punctate manner. Inactivation of swmB does not affect the localization of SwmA, an S-layer protein also required for swimming.

Picocyanobacteria (Prochlorococcus and Synechococcus) play an important role in primary production biogeochemical cycles the subtropical tropical Pacific Ocean, but little biological information on them is currently available North Ocean (NPO). The present study aimed to determine picocyanobacterial contributions total regions NPO using a combination of dual stable isotope method metabolic inhi...

The prokaryotic Synechococcus sp. RF-1 exhibited a nitrogen fixation circadian rhythm with characteristics remarkably similar to the circadian rhythm of eukaryotes. The rhythm had a free-running period of about 24 hours when the length of the preen-trained cycle did not differ too much from 24 hours, and it was insensitive to changes in temperature from 22 degrees C to 33 degrees C. Because the...