MUTYH missense and nonsense mutations located in functional domains of the protein. Shown is the α3 transcript of the human MUTYH gene which encodes a 535 amino acid protein. The various binding partners of MUTYH are represented as shapes: replication protein A (RPA), red pentagon; mutS 6 homologue (MSH6), purple trapezoid; Hus1, yellow oval; AP endonuclease 1 (APE1), green pac man symbol; and proliferating cell nuclear antigen (PCNA), brown diamond.