Figure 2. Domain architecture and structures of Apaf-1 like proteins in the NOD super-family.
A. Linear domain representations are shown for CED-4, Apaf-1 and Dark. This domain color scheme is used throughout.
B. A crystal structure is shown of the CED-9 inhibited CED-4 lateral dimer (2A5Y). The CARD in monomer B is disordered (Yan et al., 2005) and the boundary between monomers is indicated by a dashed line.
C. A composite model is shown for an inactive Apaf-1 monomer based on two crystal structures (Reidl et al., 2005; Reubold et al., 2011).