TABLE 2.

Amino acid sequence identity of RdxI and RdxS homologous proteins

Proteina	% Identity
	R. capsulatus		B. japonicum		R. leguminosarum		R. meliloti
	CcoI	CcoS	FixI	FixS	FixI	FixS	FixI	FixS
RdxI	74.1		45.4		45.5		45.0
RdxS		70.6		57.8		57.1		57.1

^aRdxI and RdxS of R. sphaeroides 2.4.1. CcoI/FixI and CcoS/FixS sequences of R. capsulatus (17), B. japonicum (33), R. leguminosarum (GenBank accession no. AJ001522), and R. meliloti (14) were used for analysis.