Table 1. Classification and general features of S. autotrophica OK10^T according to the MIGS recommendations [18].

MIGS ID	Property	Term	Evidence code
	Current classification	Domain Bacteria	TAS [19]
		Phylum Proteobacteria	TAS [20]
		Class Epsilonproteobacteria	TAS [21,22]
		Order Campylobacterales	TAS [23,24]
		Family Helicobacteraceae	TAS [24,25]
		Genus Sulfurimonas	TAS [1,2]
		Species Sulfurimonas autotrophica	TAS [1]
		Type strain OK10	TAS [1]
	Gram stain	negative	TAS [1]
	Cell shape	short rods, occasionally slightly curved rods	TAS [1]
	Motility	by monotrichous, polar flagellum	TAS [1]
	Sporulation	non-sporulating	TAS [1]
	Temperature range	10°C - 40°C	TAS [1]
	Optimum temperature	23°C - 26°C	TAS [1]
	Salinity	4% NaCl	TAS [1]
MIGS-22	Oxygen requirement	aerobic	TAS [1]
	Carbon source	CO2	TAS [1]
	Energy source	chemolithoautotrophic, S0, Na2S2O3     and Na2S x 9H2O	TAS [1]
MIGS-6	Habitat	hydrothermal deep-sea sediments	TAS [1]
MIGS-15	Biotic relationship	free living	NAS
MIGS-14	Pathogenicity	not reported	NAS
	Biosafety level	1	TAS [26]
	Isolation	Mid-Okinawa Trough hydrothermal sediments	TAS [1,7]
MIGS-4	Geographic location	Japan, Hatoma Knoll	TAS [1,7]
MIGS-5	Sample collection time	2003 or before	TAS [1]
MIGS-4.1 MIGS-4.2	Latitude    Longitude	27.27     127.17	TAS [1]
MIGS-4.3	Depth	sediment surface	TAS [1]
MIGS-4.4	Altitude	not reported	NAS

Evidence codes - IDA: Inferred from Direct Assay (first time in publication); TAS: Traceable Author Statement (i.e., a direct report 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 of the Gene Ontology project [27]. If the evidence code is IDA, then it was directly observed by one of the authors or an expert mentioned in the acknowledgements.