Transcriptional repressor that binds E-box motif CAGGTG (By similarity). Appears to function downstream of proneural bHLH proteins in promoting neural differentiation. Interacts (via SNAG domain) with LIMD1 (via LIM domains), WTIP (via LIM domains) and AJUBA (via LIM domains). Detected throughout the spinal cord except in the ventricular zone surrounding the central canal, which contains proliferating neurons, and dorsal root ganglia at 11.5 dpc. At 12.5 dpc, detected in the telencephalon, and by 14.5 dpc a distinct laminar pattern of expression was seen in regions adjacent to the ventricular zone. In the developing eye, expression was detected in the inner nuclear layer of the retina beginning at 13.5 dpc. The N-terminal non zinc-finger region mediates the repressor activity. Belongs to the snail C2H2-type zinc-finger protein family.