Download MendeleyCrystal Structure of Human Triggering Receptor Expressed on Myeloid Cells 1 (TREM-1) at 1.47A.
Kelker, M.S., Foss, T.R., Peti, W., Teyton, L., Kelly, J.W., Wilson, I.A.(2004) J Mol Biol 342: 1237-1248
- PubMed: 15351648
- DOI: https://doi.org/10.1016/j.jmb.2004.07.089
- Primary Citation of Related Structures:
1SMO - PubMed Abstract:
The triggering receptor expressed on myeloid cells (TREM) family of single extracellular immunoglobulin receptors includes both activating and inhibitory isoforms whose ligands are unknown. TREM-1 activation amplifies the Toll-like receptor initiated responses to invading pathogens allowing the secretion of pro-inflammatory chemokines and cytokines. Hence, TREM-1 amplifies the inflammation induced by both bacteria and fungi, and thus represents a potential therapeutic target. We report the crystal structure of the human TREM-1 extracellular domain at 1.47 A resolution. The overall fold places it within the V-type immunoglobulin domain family and reveals close homology with Ig domains from antibodies, T-cell receptors and other activating receptors, such as NKp44. With the additional use of analytical ultracentrifugation and 1H NMR spectroscopy of both human and mouse TREM-1, we have conclusively demonstrated the monomeric state of this extracellular ectodomain in solution and, presumably, of the TREM family in general.
Organizational Affiliation:
Department of Molecular Biology and The Skaggs Institute for Chemical Biology, The Scripps Research Institute, La Jolla, CA 92037, USA.
