6isb | pdb_00006isb

crystal structure of human CD226

spinqualitylabelsall models 6isb, resolution 2.50Å Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image   Print3D Structural highlights 6isb is a 3 chain structure with sequence from Human. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance. Gene: CD226, DNAM1 (HUMAN) Resources: FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT Function [CD226_HUMAN] Involved in intercellular adhesion, lymphocyte signaling, cytotoxicity and lymphokine secretion mediated by cytotoxic T-lymphocyte (CTL) and NK cell (PubMed:8673704). Cell surface receptor for NECTIN2. Upon ligand binding, stimulates T-cell proliferation and cytokine production, including that of IL2, IL5, IL10, IL13, and IFNG. Competes with PVRIG for NECTIN2-binding (PubMed:26755705). Publication Abstract from PubMed Natural killer (NK) cells are important component of innate immunity and also contribute to activating and reshaping the adaptive immune responses. The functions of NK cells are modulated by multiple inhibitory and stimulatory receptors. Among these receptors, the activating receptor CD226 (DNAM-1) mediates NK cell activation via binding to its nectin-like (Necl) family ligand, CD155 (Necl-5). Here, we present a unique side-by-side arrangement pattern of two tandem immunoglobulin V-set (IgV) domains deriving from the ectodomains of both human CD226 (hCD226-ecto) and mouse CD226 (mCD226-ecto), which is substantially different from the conventional head-to-tail arrangement of other multiple Ig-like domain molecules. The hybrid complex structure of mCD226-ecto binding to the first domain of human CD155 (hCD155-D1) reveals a conserved binding interface with the first domain of CD226 (D1), whereas the second domain of CD226 (D2) both provides structural supports for the unique architecture of CD226 and forms direct interactions with CD155. In the absence of the D2 domain, CD226-D1 exhibited substantially reduced binding efficacy to CD155. Collectively, these findings would broaden our knowledge of the interaction between NK cell receptors and the nectin/Necl family ligands, as well as provide molecular basis for the development of CD226-targeted antitumor immunotherapeutics. Binding mode of the side-by-side two-IgV molecule CD226/DNAM-1 to its ligand CD155/Necl-5.,Wang H, Qi J, Zhang S, Li Y, Tan S, Gao GF Proc Natl Acad Sci U S A. 2019 Jan 15;116(3):988-996. doi:, 10.1073/pnas.1815716116. Epub 2018 Dec 27. PMID:30591568 From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

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