Table 1. Iron-responsive Fur regulon in M. gryphiswaldense.

Gene	Function	RT-PCR		Product
		DP	fur
EF120624.1	Iron acquisition system: Fe2+ transporter (Feo)	1.08	7.66	Ferrous iron transport protein(FeoAB1)
MGR_1447-1446	Iron acquisition system: Fe2+ transporter (Feo)	−1.32	4.55	Ferrous iron transport protein(FeoAB2)
MGR_3446	Catalyze dismutation of superoxide anions	−1.48	2.09	Superoxide dismutase
MGR_4274	Catalase-peroxidase	1.94	1.76	Catalase-peroxidase

DP, the comparison of mRNA from WT cells treated with 30 µM iron chelator 2, 2′-dipyridyl (DIPy) and cells added with 60 µM ferric citrate.

fur, the comparison of mRNA expression in the fur mutant (F4) and WT grown under high-iron condition.

Positive and negative numbers indicate fold increase or decrease, respectively.