Probable adapter protein and signal transducer that links members of the tumor necrosis factor receptor family to different signaling pathways by association with the receptor cytoplasmic domain and kinases. Down-regulated by Pseudomonas aeruginosa, PAO1 strain and up-regulated by PA14 strain infection. The MATH/TRAF domain binds to receptor cytoplasmic domains. Belongs to the TNF receptor-associated factor family. A subfamily.