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Taxonomy: V4.0   |  16S rRNA RefSeq: V16.02   |  Genomic RefSeq: V11.01
Genus: Gemella
Lineage: Bacteria;Bacillota;Bacilli;Caryophanales;Gemellaceae;Gemella
Overview: There are five species of Gemella in the human oral microbiome: G. bergeri, G. haemolysans, G. morbillorum, G. sanguinis, and G. sp. HMT 928.

Ecological role/importance in health and disease: Gemella species reach their highest relative abundance on the buccal mucosa and keratinized gingiva, where G. haemolysans makes up 5-8% of the community. G. sanguinis makes up about 1% of the tongue dorsum microbiota and G. haemolysans and G. morbillorum together make up 0.5-1% of dental plaque in healthy individuals. Gemella species can be opportunistic pathogens; G. morbillorum and, less frequently, G. haemolysans are detected in endocarditis and other opportunistic infections (García López and Martín-Galiano 2020).
eHOMD Taxonomy
LifeCellular Organisms
 DomainBacteria (833)HOMD Abundance
  PhylumBacillota (269)HOMD Abundance
   ClassBacilli (108)HOMD Abundance
    OrderCaryophanales (31)HOMD Abundance
     FamilyGemellaceae (6)HOMD Abundance
      GenusGemella (6)HOMD Abundance
       Species
  •        Gemella bergeri (HMT-555) HOMD Abundance
  •        Gemella haemolysans
  •        Gemella massiliensis (HMT-928) HOMD Abundance
  •        Gemella morbillorum (HMT-046) HOMD Abundance
  •        Gemella sanguinis (HMT-757) HOMD Abundance