enterococcus durans enterococcus durans enterococcus durans is a species of enterococcus. it is a gram-positive, catalase- and oxidase-negative, coccus bacterium. the organism is also a facultative anaerobic organism. prior to 1984, it was known as streptococcus durans. enterococcus durans scientific classification domain: bacteria phylum: bacillota class: bacilli order: lactobacillales family: enterococcaceae genus: enterococcus species: e. durans binomial name enterococcus durans(ex sherman and wing, 1937) collins et al., 1984 certain strains have also been identified as producers of anti-inflammatory agents, which are being studied in medical research.