This family contains Sugar fermentation stimulation proteins. Which is probably a regulatory factor involved in maltose metabolism. SfsA has been shown to bind DNA [2] and it contains a helix-turn-helix motif that probably binds DNA at its C-terminus.

1: Nucleotide sequence and characterization of the sfs1 gene: sfs1 is involved in CRP*-dependent mal gene expression in Escherichia coli. Kawamukai M, Utsumi R, Takeda K, Higashi A, Matsuda H, Choi YL, Komano T; J Bacteriol 1991;173:2644-2648. PMID:2013578

2: Effects of the Escherichia coli sfsA gene on mal genes expression and a DNA binding activity of SfsA. Takeda K, Akimoto C, Kawamukai M; Biosci Biotechnol Biochem 2001;65:213-217. PMID:11272834