This family consists of several bacterial YebG proteins of around 75 residues in length. The exact function of this protein is unknown but it is thought to be involved in the SOS response. The induction of the yebG gene occurs as cell enter into the stationary growth phase and is dependent on is dependent on cyclic AMP and H-NS [1].

1: Identification of genetic factors altering the SOS induction of DNA damage-inducible yebG gene in Escherichia coli. Oh TJ, Kim IG; FEMS Microbiol Lett 1999;177:271-277. PMID:10474193