Zinc-finger proteins contain DNA-binding domains and have a wide variety of functions, most of which encompass some form of transcriptional activation or repression. The majority of zinc-finger proteins contain a Krüppel-type DNA binding domain and a KRAB domain, which is thought to interact with KAP1, thereby recruiting histone modifying proteins. ZNF266 is a 549 amino acid nuclear protein belonging to the Krüppel C2H2-type zinc finger protein family. ZNF266 has one KRAB domain and fourteen C2H2 zinc fingers. Due to the presence of these domains, ZNF266 is thought to be involved in transcriptional regulation. Repression of ZNF266 results in the blocking of erythroid differentiation and partial blocking of megakaryocytic differentiation, possibly indicating a role in the differentiation of erythroids and megakaryocytes.