FEGBFédération Europeénne du Génie Biologique (French)
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The fegA gene is organized in an operon with fegB which probably encodes an inner membrane protein.
Experiments show that both fegA and fegB are required for the utilization of ferrichrome, since the fegB mutant were found to form a normal symbiosis and fegAB mutant had a dramatic phenotype in planta leading to the speculation that it might be due to the inability of the mutant to transport ferrichrome.