Table 1.

Classification and general features of the six Enterococcus faecalis strains according to the MIGS recommendations [26]

MIGS ID	Property	Term	Evidence code a
	Current classification	Domain: Bacteria	TAS [38]
		Phylum: Firmicutes	TAS [39]
		Class: Bacilli	TAS [40]
		Order: Lactobacillales	TAS [41]
		Family: Enterococcaceae	TAS [42]
		Genus: Enterococcus	TAS [18], [19]
		Species: Enterococcus faecalis	TAS [43]
		Strain: S1, S12, S17, S18, S19, S32	NAS
	Gram stain	Positive	TAS [42]
	Cell shape	Oval cocci	TAS [42]
	Motility	None	TAS [44]
	Sporulation	Non-sporulating	TAS [43]
	Temperature range	10-45 °C	TAS [22]
	Optimum temperature	37 °C	TAS [22]
	pH range	4.6-9.9 (Optimum pH at 7.5)	TAS [22]
MIGS-6	Habitat	Gastrointestinal tracts of humans and other mammals	TAS [8]
MIGS-6.3	Salinity	0-6.5 %	TAS [22]
MIGS-22	Oxygen	Facultatively anaerobic	TAS [44]
MIGS-15	Biotic relationship	Commensal bacterium	TAS [8]
MIGS-14	Pathogenicity	Highly pathogenic	TAS [43]
MIGS-4	Geographic location	Denmark	NAS
MIGS-5	Sample collection	2011	NAS
MIGS-4.1	Latitude	Unknown	NAS
MIGS-4.2	Longitude	Unknown	NAS
MIGS-4.3	Altitude	Unknown	NAS

^a Evidence codes - TAS: Traceable Author Statement (i.e., a direct exists in the literature); NAS: Non-traceable Author Statement (i.e., not directly observed for the living, isolated sample, but based on a generally accepted property for the species, or anecdotal evidence). These evidence codes are from the Gene Ontology project [45]