CHORD represents a Zn binding domain. Silencing of the C. elegans CHORD-containing gene results in semisterility and embryo lethality, suggesting an essential function of the wild-type gene in nematode development [1].

1: A novel class of eukaryotic zinc-binding proteins is required for disease resistance signaling in barley and development in C. elegans. Shirasu K, Lahaye T, Tan MW, Zhou F, Azevedo C, Schulze-Lefert P; Cell 1999;99:355-366. PMID:10571178