InterPro domain: IPR005226

Characterised proteins in this family include probable iron export permease protein FetB, which is part of the ABC transporter complex FetAB, probably involved in iron export [ 1 ], and aluminum sensitive 3 protein, also part of an ABC transporter required for aluminum (Al) resistance [ 2 ]. This family also includes integral membrane proteins currently uncharacterised.

1. Overexpression of fetA (ybbL) and fetB (ybbM), Encoding an Iron Exporter, Enhances Resistance to Oxidative Stress in Escherichia coli. Appl. Environ. Microbiol. 79, 7210-9
2. ALS3 encodes a phloem-localized ABC transporter-like protein that is required for aluminum tolerance in Arabidopsis. Plant J. 41, 353-63