The anaerobic digestion process is often inhibited by alteration of substrates and/or organic overload. This study aimed to elucidate changes of microbial ecology in biogas reactors upon radical changes of substrates and to determine their importance to process imbalance. For this reason, continuously fed reactors were disturbed with pulses of proteins, lipids and carbohydrates and the microbia...

Analysis of the metaproteome of microbial communities is important to provide an insight of community physiology and pathogenicity. This study evaluated the metaproteome of endodontic infections associated with acute apical abscesses and asymptomatic apical periodontitis lesions. Proteins persisting or expressed after root canal treatment were also evaluated. Finally, human proteins associated ...

Microbial or type-1 rhodopsins are light sensitive proteins that utilize all-trans retinal as chromophore. Microbial rhodopsins are present in archaea, eubacteria and eukaryotes. Their broad and patchy distribution among the three domains of life is attributed to the lateral gene transfer mechanism of evolution. Microbial rhodopsins function as sensory rhodopsins, light-gated ion pumps and ligh...

Metagenomics is expanding our knowledge of the gene content, functional significance, and genetic variability in natural microbial communities. Still, there exists limited information concerning the regulation and dynamics of genes in the environment. We report here global analysis of expressed genes in a naturally occurring microbial community. We first adapted RNA amplification technologies t...