Transcriptional regulator (PubMed:24155663, PubMed:24269816). Recognizes and binds to the core DNA sequence motif 5'-GGGGG-3' (PubMed:24155663, PubMed:24269816). Binds to the col2a1a promoter and activates col2a1a expression (PubMed:24155663). Binds to the sncgb promoter and activates sncgb expression, as part of a complex with sox9a (PubMed:24269816). Interacts with sox9a. Highly expressed in heart and brain. Also detected at lower levels in muscle and testis. Detected in the notochord at 22-48 hours post-fertilization (hpf). Expressed in otic vesicles and pectoral fin at 48 hpf. Expressed in the hindbrain and midbrain-hindbrain boundary at 48-96 hpf. C2H2-type zinc-finger domains 6 and 9 are important for binding to the GGGGG motif in target DNA, and for the interaction with sox9a. Morpholino knockdown of the protein results in a curved body axis (PubMed:24155663). Expression of col2a1a and sncgb in the developing notochord at 24 hours post-fertilization is significantly reduced (PubMed:24155663, PubMed:24269816). Belongs to the krueppel C2H2-type zinc-finger protein family.