Acts as a transcriptional activator. Binds to the DNA consensus sequence 5'-GACCACCCA-3' (By similarity). May regulate the transcription of specific genes during normal development (PubMed:9216996). Mediates SHH signaling (PubMed:9216996). Plays a role in cell proliferation and differentiation via its role in SHH signaling (By similarity). Belongs to the GLI C2H2-type zinc-finger protein family.