This region contains the important motif (LXXLL) necessary for the interaction of FTZ with the nuclear receptor FTZ-F1. FTZ is thought to represents a category of LXXLL motif-dependent co-activators for nuclear receptors.

1: Segmentation gene product Fushi tarazu is an LXXLL motif-dependent coactivator for orphan receptor FTZ-F1. Suzuki T, Kawasaki H, Yu RT, Ueda H, Umesono K; Proc Natl Acad Sci U S A 2001;98:12403-12408. PMID:11592991