6mja

Crystal structure of the mCD1d/xxo (JJ294) /iNKTCR ternary complex

spinqualitylabelsall models 6mja, resolution 2.35Å Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image   Print3D Structural highlights 6mja is a 4 chain structure with sequence from Homo sapiens and Mus musculus. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance. Method: X-ray diffraction, Resolution 2.35Å Ligands: BMA, FUC, GOL, JTJ, NA, NAG Resources: FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT Function A0A0B4J1J9_MOUSE K7N5M3_HUMAN Publication Abstract from PubMed Invariant natural killer T-cells (iNKT) are a glycolipid-responsive subset of T-lymphocytes that fulfill a pivotal role in the immune system. The archetypical synthetic glycolipid, alpha-galactosylceramide (alpha-GalCer), whose molecular framework is inspired by a group of amphiphilic natural products, remains the most studied antigen for iNKT-cells. Nonetheless, the potential of alpha-GalCer as an immunostimulating agent is compromised by the fact that this glycolipid elicits simultaneous secretion of Th1- and Th2-cytokines. This has incited medicinal chemistry efforts to identify analogues that are able to perturb the Th1/Th2 balance. In this work, we present the synthesis of an extensive set of 4"-O-alkylated alpha-GalCer analogues, which were evaluated in vivo for their cytokine induction. We have found that conversion of the 4"-OH group to ether moieties decreases the immunogenic potential in mice relative to alpha-GalCer. Yet, the benzyl-modified glycolipids are able to produce a distinct pro-inflammatory immune response. The crystal structures suggest an extra hydrophobic interaction between the benzyl moiety and the alpha2-helix of CD1d. 4"-O-Alkylated alpha-Galactosylceramide Analogues as iNKT-Cell Antigens: Synthetic, Biological, and Structural Studies.,Janssens J, Bitra A, Wang J, Decruy T, Venken K, van der Eycken J, Elewaut D, Zajonc DM, van Calenbergh S ChemMedChem. 2019 Jan 8;14(1):147-168. doi: 10.1002/cmdc.201800649. Epub 2018 Dec, 17. PMID:30556652 From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. See Also Beta-2 microglobulin 3D structures CD1 T-cell receptor 3D structures

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