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AerococcusRANK: GenusTAXONOMY: Bacteria -> Terrabacteria group -> Firmicutes -> Bacilli -> Lactobacillales -> Aerococcaceae -> Aerococcus OVERVIEW: Aerococcus is a genus in the phylum Firmicutes (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. Cells are ovoid in shape (1–2 μm in diameter) and divide on two planes at right angles, giving rise to tetrad and cluster arrangements; some pairs and single cells may also be observed. α-Hemolytic. Gram-positive and nonmotile. Nonsporeforming. Facultatively anaerobic. Catalase-negative. Oxidase-negative. Grows in 6.5% NaCl. Gas is not produced in MRS broth. Acid is produced from glucose and some other carbohydrates. Hippurate is hydrolyzed by most strains. Leucine aminopeptidase and β-glucuronidase may or may not be produced. Arginine is not deaminated by most strains and urease is not produced. Voges–Proskauer-negative. Vancomycin-sensitive. DNA G+C content (mol%): 35–44 (Tm). Type species: Aerococcus viridans This genus contains microbial species that can reside in the human gastrointestinal tract. [PMC 4262072]
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