Figure 7
From: The Architecture of the TIR Domain Signalosome in the Toll-like Receptor-4 Signaling Pathway

MyD88 interaction models with the downstream orchestrators reveal that the three parallel downstream paths are competitive.
(a) TRAF6 (1lb5:A) and TRAF3 (1fll:A) binds to almost completely overlapping interfaces on MyD88 DD (3mop:F), thus they are mutually exclusive. (b) IRAK4 (3mop:J) and FADD (2gf5:A) bind to overlapping interfaces on MyD88 DD (3mop:F), thus they compete to bind to MyD88. MyD88-IRAK4 interaction is not PRISM prediction, where the crystal structure of the complex is available (3mop:FJ). Red box indicates the location of steric clash.