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 Krueppel-type DNA binding domain and a KRAB domain, which is thought to interact with KAP1, thereby recruiting histone modifying proteins. ZSCAN22 (zinc finger and SCAN domain-containing protein 22), also known as HKR2 or ZNF50 (zinc finger protein 50), is a 491 amino acid nuclear protein. Belonging to the Krueppel C2 H2-type zinc-finger protein family, ZSCAN22 contains eight C2 H2-type zinc fingers and one SCAN box domain. ZSCAN22 may be involved in transcriptional regulation, and becomes phosphorylated upon DNA damage.
GLI-Kruppel family member HKR2; Krueppel-related zinc finger protein 2; Protein HKR2; Zinc finger and SCAN domain-containing protein 22; Zinc finger protein 50; zinc finger protein 8-like