MAPPIT analysis of TLR adaptor complexes.
Toll-like receptors (TLRs) are crucial components of the innate immune system, coupling pathogen recognition to a cellular response. We used the MAPPIT mammalian two-hybrid technique to investigate protein-protein interactions in the early steps in TLR signalling. A partial TLR-adaptor interaction map was constructed confirming several known but also documenting novel interactions. We show that the TLR adaptor Mal is critical for linking Myeloid Differentiation primary response protein 88 (MyD88) to TLR2 and TLR4. Analysis of the contributions of the different sub-domains of MyD88-adaptor-like protein (Mal) and MyD88 in adaptor homo- and hetero-dimerisation provides an initial mechanistic insight in this bridging function of Mal.
Ulrichts
Peter
P
Flanders Institute for Biotechnology (VIB), Department of Medical Protein Research, Faculty of Medicine and Health Sciences, Ghent University, A. Baertsoenkaai 3, B-9000 Ghent, Belgium.
Peelman
Frank
F
Beyaert
Rudi
R
Tavernier
Jan
J
D048868:Adaptor Proteins, Signal Transducing / Q000378:metabolism*; D019281:Dimerization; D006801:Humans; D053594:Myeloid Differentiation Factor 88 / Q000378:metabolism; D011485:Protein Binding; D051193:Toll-Like Receptors / Q000378:metabolism*; D020798:Two-Hybrid System Techniques
D048868:Adaptor Proteins, Signal Transducing; D053594:Myeloid Differentiation Factor 88; D051193:Toll-Like Receptors