This family represents a conserved region within several bacterial proteins that resemble IcmF, which has been proposed [1] to be involved in Vibrio cholerae cell surface reorganisation, resulting in increased adherence to epithelial cells and increased conjugation frequency. Note that many family members are hypothetical proteins.

1: Involvement of in vivo induced icmF gene of Vibrio cholerae in motility, adherence to epithelial cells, and conjugation frequency. Das S, Chakrabortty A, Banerjee R, Chaudhuri K; Biochem Biophys Res Commun 2002;295:922-928. PMID:12127983