Legionella species are environmental gram-negative bacteria able to cause a severe form of
pneumonia in humans known as Legionnaires' disease. Since the identification of …

Most of the genetic, cellular, and biochemical diversity of life rests within single-celled
organisms—the prokaryotes (bacteria and archaea) and microbial eukaryotes (protists) …

Members of the diverse bacterial phylum Bacteroidetes have colonized virtually all types of
habitats on Earth. They are among the major members of the microbiota of animals …

The opportunistic protist Acanthamoeba, which interacts with other microbes such as
bacteria, fungi, and viruses, shows significant similarity in cellular and functional aspects to …

Marine sponges (phylum Porifera) often contain dense and diverse microbial communities,
which can constitute up to 35% of the sponge biomass. The genome of one sponge …

Background Proteinaceous toxins are observed across all levels of inter-organismal and
intra-genomic conflicts. These include recently discovered prokaryotic polymorphic toxin …

Host-adapted bacteria include mutualists and pathogens of animals, plants and insects.
Their study is therefore important for biotechnology, biodiversity and human health. The …

Endozoicomonas bacteria are globally distributed and often abundantly associated with
diverse marine hosts including reef-building corals, yet their function remains unknown. In …

Contractile injection systems mediate bacterial cell-cell interactions by a bacteriophage tail–
like structure. In contrast to extracellular systems, the type 6 secretion system (T6SS) is …

There is an expanding body of evidence that free-living amoebae (FLA) increase both the
numbers and virulence of water-based, human-pathogenic, amoeba-resisting …