Low Rates of Lateral Gene Transfer among Metabolic Genes Define the Evolving Biogeochemical Niches of Archaea through Deep Time

Table 2

S metabolism.

Gene name	Gene	Linked to	Number of LGT events	Monophyletic clades
Dissimilatory sulfite reductase, alpha subunit	DsrA	DsrB may be linked to SseA and SQR in Pyrobaculum arsenaticum and P. calidifontis	2	(1) Archaeoglobus spp.; (2) Caldivirga, Vulcanisaeta, Pyrobaculum spp., and; Thermoproteus
Dissimilatory sulfite reductase, beta subunit	DsrB	DsrA may be linked to SseA and SQR in Pyrobaculum arsenaticum and P. calidifontis	(2)	(1) Archaeoglobus spp.; (2) Caldivirga, Vulcanisaeta, Pyrobaculum spp., and Thermoproteus
Thiosulfate sulfurtransferase	SseA	May be linked to DsrAB and SQR in Pyrobaculum arsenaticum and P. calidifontis	11	(1) Methanohalophilus; (2) Methanosaeta; (3) Methanoculleus; (4) Methanothermobacter; (5) Halobacteriales; (6) Aeropyrum; (7) Caldivirga, P. Aerophilum; (8) Caldivirga, Pyrobaculum spp., Thermoproteus uzoniensis, and Vulcanisaeta; (9) Pyrobaculum sp. 1680; (10) Sulfolobales; (11) Sulfolobales
Sulfur oxygenase reductase	SOR		2	(1) Ferroplasma, Picrophilus; (2) Acidianus spp., Desulfurolobus, S. metallicus, S. tokodaii
Sulfur reductase	SreC		1	(1) Sulfolobales
Flavocytochrome c sulfide dehydrogenase	FCSD		3	(1) Ignicoccus; (2) Caldivirga, Vulcanisaeta, Pyrobaculum spp., and; Thermoproteus spp.; (3) Metallosphaera, S. tokodaii, and Acidianus
Sulfide quinone oxidoreductase	SQO		2	(1) Ferroplasma, Picrophilus, Tp. acidophilum, and Tp. Volcanium; (2) Sulfolobales