5ffl | pdb_00005ffl
Crystal structure of mouse CD300lf at 1.6 Angstroms resolution.
Structural highlights
FunctionCLM1_MOUSE Acts as an inhibitory receptor for myeloid cells and mast cells. Inhibits osteoclast formation. Induces macrophage cell death upon engagement.[1] [2] [3] Publication Abstract from PubMedNoroviruses (NoVs) are a leading cause of gastroenteritis globally, yet the host factors required for NoV infection are poorly understood. We identified host molecules that are essential for murine NoV (MNoV)-induced cell death, including CD300lf as a proteinaceous receptor. We found that CD300lf is essential for MNoV binding and replication in cell lines and primary cells. Additionally, Cd300lf(-/-) mice are resistant to MNoV infection. Expression of CD300lf in human cells breaks the species barrier that would otherwise restrict MNoV replication. The crystal structure of the CD300lf ectodomain reveals a potential ligand-binding cleft composed of residues that are critical for MNoV infection. Therefore, the presence of a proteinaceous receptor is the primary determinant of MNoV species tropism, whereas other components of cellular machinery required for NoV replication are conserved between humans and mice. Discovery of a proteinaceous cellular receptor for a norovirus.,Orchard RC, Wilen CB, Doench JG, Baldridge MT, McCune BT, Lee YC, Lee S, Pruett-Miller SM, Nelson CA, Fremont DH, Virgin HW Science. 2016 Aug 26;353(6302):933-6. doi: 10.1126/science.aaf1220. Epub 2016 Aug, 18. PMID:27540007[4] From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. References
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