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The Negativicutes are a class of bacteria in the phylum Bacillota, whose members have a peculiar cell wall with a lipopolysaccharide outer membrane which stains gram-negative, unlike most other members of the Bacillota. Although several neighbouring Clostridia species also stain gram-negative, the proteins responsible for the unusual diderm structure of the Negativicutes may have actually been laterally acquired from Pseudomonadota. Additional research is required to confirm the origin of the diderm cell envelope in the Negativicutes.
Acidaminococcus is a genus in the phylum Bacillota (Bacteria), whose members are anaerobic diplococci that can use amino acids as the sole energy source for growth. Like other members of the class Negativicutes, they are gram-negative, despite being Bacillota, which are normally gram-positive.
Aerococcus is a genus in the phylum Bacillota (Bacteria). The genus was first identified in 1953 from samples of air and dust as a catalase-negative, gram-positive coccus that grew in small clusters. They were subsequently found in hospital environments and meat-curing brines. It has been difficult to identify as it resembles alpha-hemolytic Streptococcus on blood agar plates and is difficult to identify by biochemical means. Sequencing of 16S rRNA has become the gold standard for identification, but other techniques such as MALDI-TOF have also been useful for identifying both the genus and species.
The Selenomonadales are an order of bacteria within the class Negativicutes; unlike most other members of Bacillota, they are Gram-negative. The phylogeny of this order was initially determined by 16S rRNA comparisons. More recently, molecular markers in the form of conserved signature indels (CSIs) have been found specific for all Selenomonadales species. On the basis of these markers, the Selenomonadales are inclusive of two distinct families, and are no longer the sole order within the Negativicutes. Several CSIs have also been found specific for both families, Sporomusaceae and Selenomonadceae. Samples of bacterial strains within this order have been isolated from the root canals of healthy human teeth.
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Kerstersia gyiorum is a Gram-negative, catalase-positive, oxidase-negative, bacterium of the genus Kerstersia, isolated from various human clinical samples.
Kerstersia similis is a gram-negative bacterium of the genus of Kerstersia which was isolated from human clinical samples.
Anaerococcus is a genus of bacteria. Its type species is Anaerococcus prevotii. These bacteria are Gram-positive and strictly anaerobic. The genus Anaerococcus was proposed in 2001. Its genome was sequenced in August 2009. The genus Anaerococcus is one of six genera classified within the group GPAC. These six genera are found in the human body as part of the commensal human microbiota.
Roseomonas is a genus of Gram negative bacteria. The cells are coccoid rods when viewed microscopically. Certain species are known to be opportunistic infections for humans.
Janibacter is a genus of Gram positive, nonmotile, non-sporeforming bacteria. The genus name is derived from the two-faced Roman god Janus, referring to the fact that the cells of the original strain could be rod-shaped or coccoid.
Effusibacillus consociatus is a species of Gram positive, aerobic, bacterium. The cells are rod-shaped and form spores. It was first isolated from a blood sample from a 51-year-old woman, although it was not implicated as a pathogen. The species name is derived from Latin consociatus, to indicate that the bacteria was associated with a human clinical case.
References
- ↑ "LPSN" . Retrieved 2013-07-08.
- ↑ "straininfo of Achromobacter insolitus". Archived from the original on 2016-03-04. Retrieved 2013-07-08.
- ↑ International Journal of Systematic and Evolutionary Microbiology [ permanent dead link ]
- ↑ "Taxonomy Browser". Archived from the original on 2015-09-23. Retrieved 2013-07-08.
- ↑ Coenye, T; Vancanneyt, M; Falsen, E; Swings, J; Vandamme, P (2003). "Achromobacter insolitus sp. nov. and Achromobacter spanius sp. nov., from human clinical samples". Int J Syst Evol Microbiol. 53 (Pt 6): 1819–24. doi: 10.1099/ijs.0.02698-0 . PMID 14657110.
