Putative sodium-dependent transporter which is required for viability, early imaginal disk development and adult motor coordination (PubMed:17890365). Also has a role in the fate commitment of the R3/R4 photoreceptor cells (PubMed:17890365). May function in ommatidial polarity by regulating the activity of the core polarity genes, acting upstream of (or in parallel to) Vang, dsh, pk, stan, and dgo, but downstream or independently of fz (PubMed:17890365). Expressed in third instar eye disks. The imaginal disks of third instar larvae are dramatically decreased in size (PubMed:17890365). Overall larval size is unaffected (PubMed:17890365). The name 'bedraggled' derives from escaper mutant adults which upon eclosion, immediately fall into their food and die due to severe defects in motor coordination. Belongs to the sodium:neurotransmitter symporter (SNF) (TC 2.A.22) family.