1A bacterium of a large group typically having simple cells with rigid cell walls and often flagella for movement. The group comprises the ‘true’ bacteria and cyanobacteria, as distinct from archaea.
Division (or subkingdom) Eubacteria, kingdom Monera; this group is sometimes taken to exclude non-rigid forms such as spirochaetes and mycoplasmas
- ‘All protein sequences from 21 complete chloroplast genomes are analyzed in comparison with selected archaea, eubacteria, and eukaryotes.’
- ‘Initial sequence annotation has revealed an unusually high number of genes with no obvious similarity to previously described genes from eubacteria and archaea.’
- ‘What's more, these origin-of-life researchers suspect that the two major groups of bacteria, known as archaebacteria and eubacteria, originated on two separate occasions about 3.8 billion years ago.’
- ‘They conjecture that an evolutionary quantum leap happened after an archaebacterium swallowed a eubacterium.’
- ‘These sequences included proteins from a diverse range of organisms, ranging from eubacteria and archaebacteria to algae, fungi, and plants.’
2A bacterium found mainly in the intestines of vertebrates and in the soil.
Genus Eubacterium; Gram-positive, anaerobic, rod-shaped bacteria‘Malignancy or another process in the colon can induce sepsis with Clostridium species (especially Clostridium septicum) or arthritis caused by Eubacterium lentum, or it can emerge first as abdominal wall myonecrosis.’‘Chlamydiae are Gram-negative eubacteria that replicate strictly inside eukaryotic cells.’