Molecular genetics of the genus Paracoccus: metabolically versatile bacteria with bioenergetic flexibility

Article Abstract:

The molecular genetics of the Paracoccus denitrificans in terms of its promoter structure and relation to gene regulation was investigated. The genome of the bacterium contained three distinct DNA molecules and the DNA sequences of the donor backbone and the target DNA at the integration site resembled the 'res' sites observed in transposons belonging to the Tn3 family. The sequences of the promoters in association with their transcript sites resembled the sigma70 consensus sequence of the Escherichia coli. The organism's genes encoding respiratory proteins were found at the replicons.

Bacterial genetics, Microbial genetics

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Adaptation and acclimation of photosynthetic microorganisms to permanently cold environments

Article Abstract:

The stress of low temperatures on life is exacerbated in organisms that rely on photoautrophic production of organic carbon and energy sources. Phototrophic organisms must coordinate temperature-independent reactions of light absorption and photochemistry with temperature-dependent processes of electron transport and utilization of energy sources through growth and metabolism.

Science & research, Bacteria, Photosynthetic, Photosynthetic bacteria, Photochemistry, Acclimatization, Acclimatization (Biology)

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