This entry represents the C-terminal domain of BTB/POZ domain-containing proteins 1 and 15 (KCTD1/15), characterised by beta-sheets surrounded by alpha-helices [1]. Structural similarities of the C-terminal domain of KCTD proteins allowed their classification in clades and subclades described in [1].

1: AlphaFold-Predicted Structures of KCTD Proteins Unravel Previously Undetected Relationships among the Members of the Family. Esposito L, Balasco N, Smaldone G, Berisio R, Ruggiero A, Vitagliano L; Biomolecules. 2021; [Epub ahead of print] PMID:34944504