TABLE 4.

Catecholate uptake systems of S. enterica

IROMP	Receptor for:
	Natural catecholate siderophore	Chemically synthesized catecholate siderophore
FepA	Enterobactin	N,N′-bis-(2,3-dihydroxybenzoyl)-l-lysine
	DHBS	N,N′-bis-(2,3-diacetoxybenzoyl)-l-lysine
	Myxochelins A, B, and C	N,N′-bis-(2,3-dihydroxybenzoyl)-l-serine
	Protochelin
IroN	Enterobactin	N,N′-bis-(2,3-dihydroxybenzoyl)-l-lysine
	DHBS	N,N′-bis-(2,3-diacetoxybenzoyl)-l-lysine
	Amonabactins P2 and T2	N,N′-bis-(2,3-dihydroxybenzoyl)-l-serine
	Corynebactin	N,N′-bis-(2,3-dihydroxybenzoyl)-d-ornithine
	Myxochelins A and B
	Protochelin
Cir	DHBS	N,N′-bis-(2,3-dihydroxybenzoyl)-l-lysine
	Amonabactins P2 and T2	N,N′-bis-(2,3-diacetoxybenzoyl)-l-lysine
	Myxochelins A and B
	Protochelin