Mutant studies of phosphofructo-2-kinases do not reveal an essential role of fructose-2,6-bisphosphate in the regulation of carbon fluxes in yeast cells

Article Abstract:

A study was conducted on Saccharomyces cerevisiae mutants' phosphofructo-2-kinase activity to determine the effect of fructose-2,6-bisphosphate (F2,6bp) on the regulation of carbohydrate metabolism. Results have shown that glycolytic flux rates during glucose fermentation is not regulated by the level of F2,6bp. Moreover, F2,6bp is not involve in the prevention of futile cycling of the 6pf-1-K/F-1,6-bPase enzyme pair.

Research, Yeast, Yeast (Food product), Carbohydrate metabolism, Cell metabolism

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Cloning and characterization of the groE heat-shock operon of the marine bacterium Vibrio harveyi

Article Abstract:

Research reveals that Vibrio harveyi groE operon sequence transcribes to a single bicistronic transcript starting from two sigma 32 and 70 promoters. The groE operon contain the heat-shock genes groES and groEL. Data indicate that the GroEL chaperone protein may be more species-specific than he GroES co-chaperone proteins.

Poland, Genetic aspects, Carrier proteins, Transport proteins, Protein folding

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SigB, an alternative sigma factor of the myxobacterium stigmatella aurantiaca, is synthesized during development and heat shock

Article Abstract:

Results demonstrate that during heat shock phase of the myxobacterium Stigmatella anurantiaca, sigma factor SigB is induced and its inactivation results in the loss of one sigma factor.

Germany, Proteins, Protein synthesis, Myxobacterales, Myxobacteria

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