This family consists of a group of proteins predominantly found in Enterobacteria, including Uncharacterized protein YfeC from Escherichia coli, a dual transcriptional regulator predicted to form homodimers [1].

1: Unraveling the functions of uncharacterized transcription factors in Escherichia coli using ChIP-exo. Gao Y, Lim HG, Verkler H, Szubin R, Quach D, Rodionova I, Chen K, Yurkovich JT, Cho BK, Palsson BO; Nucleic Acids Res. 2021;49:9696-9710. PMID:34428301