IcaR belongs to the tetracycline repressor (TetR) family of proteins, which are involved in a wide variety of gene regulations. It binds to a 42 bp region immediately upstream of the icaA gene. This entry represents the C-terminal domain which is involved in dimerization [1].

1: Crystal structure of IcaR, a repressor of the TetR family implicated in biofilm formation in Staphylococcus epidermidis. Jeng WY, Ko TP, Liu CI, Guo RT, Liu CL, Shr HL, Wang AH; Nucleic Acids Res. 2008;36:1567-1577. PMID:18208836