. Author manuscript; available in PMC: 2018 Jul 19.

Published in final edited form as: Metallomics. 2017 Jul 19;9(7):840–851. doi: 10.1039/c7mt00112f

Table 1.

Fe²⁺ efflux transporters in bacteria.

Protein	Organism	Function	Category	Substrate specificity^*	Transcription regulation	References
PfeT	Bacillus subtilis	Fe²⁺ efflux	P_1B4-type ATPase	Fe²⁺ ^a, ^b, Co²⁺ ^a	PerR & Fur	36
FrvA	Listeria monocytogenes	Fe²⁺ efflux	P_1B4-type ATPase	Fe²⁺ ^a, ^b, Co²⁺ ^a, Zn²⁺ ^a	PerR & Fur	27
CtpD	Mycobacterium tuberculosis	Fe²⁺ efflux	P_1B4-type ATPase	Fe²⁺ ^a, ^b, Co²⁺ ^a	Unknown	37
PmtA	group A Streptococcus	Fe²⁺ efflux	P_1B4-type ATPase	Fe²⁺ ^b	PerR	38, 39
Nia	Sinorhizobium meliloti	Fe²⁺ or Ni²⁺ efflux	P_1B5-type ATPase	Fe²⁺ ^a, ^b, Ni²⁺ ^a, ^b	Unknown	73
FieF (YiiP)	Escherichia coli	Fe²⁺ or Zn²⁺ efflux	CDF family	Fe²⁺ ^b, Zn²⁺ ^a, Cd²⁺ ^a	Unknown	92–94
AitP	Pseudomonas aeruginosa	Fe²⁺ or Co²⁺ efflux	CDF family	Fe²⁺ ^b	Unknown	97
FeoE	Shewanella oneidensis	Fe²⁺ efflux	CDF family	Fe²⁺ ^b	Unknown	101
IceT	Salmonella typhimurium	Fe²⁺ citrate or citrate efflux	MFS family	Fe²⁺ ^b	BaeSR	120
MbfA	Agrobacterium tumefaciens	Fe²⁺ efflux	Membrane bound ferritin	Fe²⁺ ^b	Irr	125
MbfA	Bradyrhizobium japonicum	Fe²⁺ efflux	Membrane bound ferritin	Fe²⁺ ^b	Irr	127

Note: the substrate specificity of the transporters is either based on biochemical measurements (a), inferred from physiology studies (b), or both (a, b).