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. 2018 Jan 29;9:75. doi: 10.3389/fimmu.2018.00075

Figure 2.

Figure 2

Structural organization of individual domains of toll/interleukin 1 receptor (TIR) domain-containing adaptor protein (TIRAP). (A) The overall structure of a modeled TIR domain dimer. (B) A predicted model of the N-terminal domain (NTD). (C) Initial model (energy minimized) of a full-length TIRAP with the NTD and TIR domains arranged in a physiological dimeric condition. (D) A closer view of the dimer interface between TIR monomers involving residues from αC′ and αD helices. (E) A detailed view of the NTD dimerization, including residues from both phosphatidylinositol (PI)-binding motif (PBM) and PI-binding domain (PBD). (F) A 90° rotated view of panel (E) for clarity. Dashed lines represent hydrogen bonds, and digits indicate distances in angstrom units.