Possible transcriptional activator. Expressed in a subset of cells of the olfactory epithelium, in the dental epithelium, in developing whiskers and in cells lining the endolymphatic duct of the inner ear at stage 16.5 dpc. Also expressed in kidney, hair follicles, thymus and in collecting ducts from the mandibular gland as well as in a subset of epithelial cells lining the sublingual and submaxillary ducts from the salivary glands to the oral cavity at stage 18.5 dpc. Expressed in the developing brain along a neuromeric boundary between prosomeres p5 and p6 as well as in the neural layer of the retina.