Table 2.

Presence (√), absence (−--) or number of genes or groups of genes encoding selected metabolic traits

	Kam1	SolV	V4
pmo clusters	3	2	2
Uptake hydrogenase, NiFe, type 1h	√	√	–
Uptake hydrogenase, NiFe, type 1d	√	√	√
Solouble hydrogenase, NiFe, type 3b	√	√	√
Calvin Benson Bassham cycle	√	√	√
MoFe-Nitrogenase	√	√	√
Alternative MQ synt. Pathway	√	√	√
Resp. Complex I, 14 subunits	√	√	√
Resp. Complex II	√	√	√
Complex III, bc1	–	–	–
Alternative complex III	√	√	√
Resp. Complex IV CBB3 type	√	√	√
Resp complex V, ATP synthase	2	2	2
Ech hydrogenase related (Ehr) complex	√	√	√
Heavy metal efflux pumps	8	8	9

Strain designations are given on top of columns. For full species, names see Table 1