Table 1. Classification and general features of S. deleyianum 5175^T according to the MIGS recommendations [9].

MIGS ID	Property	Term	Evidence code
	Current classification	Domain Bacteria	TAS [10]
		Phylum Proteobacteria	TAS [11]
		Class Epsilonproteobacteria	TAS [12]
		Order Campylobacterales	TAS [12]
		Family Campylobacteraceae	TAS [13]
		Genus Sulfurospirillum	TAS [1]
		Species Sulfurospirillum deleyianum	TAS [1]
		Type strain 5175	TAS [1]
	Gram stain	negative	TAS [1]
	Cell shape	curved spiral rods	TAS [1]
	Motility	motile by polar flagellum	TAS [1]
	Sporulation	non-sporulating	TAS [1]
	Temperature range	20°C-36°C, no growth at 42°C	TAS [14]
	Optimum temperature	30°C	NAS
	Salinity	< 0.2%	TAS [14]
MIGS-22	Oxygen requirement	anaerobic, microaerobic (1-4% oxygen)	TAS [1]
	Carbon source	dicarboxylic acids, aspartate, pyruvate,     acetate, hydrogen carbonate	TAS [1]
	Energy source	dicarboxylic acids, aspartate, pyruvate,     formate, H2, H2S	TAS [1,3]
MIGS-6	Habitat	anoxic mud	TAS [1]
MIGS-15	Biotic relationship	free living	TAS [1]
MIGS-14	Pathogenicity	none	NAS
	Biosafety level	1	TAS [15]
	Isolation	anoxic mud from a German lake	TAS [1]
MIGS-4	Geographic location	Heinigen near Wolfenbüttel	TAS [3]
MIGS-5	Sample collection time	1976	NAS
MIGS-4.1 MIGS-4.2	Latitude     Longitude	52.17     10.55	NAS
MIGS-4.3	Depth	not reported
MIGS-4.4	Altitude	not reported

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 [16]. If the evidence code is IDA, then the property should have been directly observed by one of the authors or an expert mentioned in the acknowledgements.