Actin-binding protein involved in the regulation of neuronal process formation and in differentiation of neural crest cells. Down-regulates transcription factor NF2L2/NRF2 by decreasing the rate of protein synthesis and not via a ubiquitin-mediated proteasomal degradation mechanism (By similarity). Binds to RB1. Hypophosphorylated RB1 associates with ENC1 during neuronal differentiation, while hyperphosphorylated RB1 associates with ENC1 in undifferentiating cells. Part of a complex that contains CUL3, RBX1 and ENC1 (By similarity). Interacts indirectly with KEAP1 (By similarity). Interacts with the actin cytoskeleton. Primarily expressed in the nervous system. Expression is highly dynamic but mostly restricted to the nervous system. Outside the nervous system, expression is detected in the rostral-most somitomere of the presomitic mesoderm, at the times corresponding to the epithelialization that precedes somite formation. First detected in the brain and spinal cord of 12 PC embryos. Ubiquitinated by E3 ubiquitin ligase complex formed by CUL3 and RBX1 and probably targeted for proteasome-independent degradation. Quinone-induced oxidative stress increases its ubiquitination (By similarity).