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首页> 外文期刊>Nature immunology >Crystal structure of the murine NK cell-activating receptor NKG2D at 1.95 A
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Crystal structure of the murine NK cell-activating receptor NKG2D at 1.95 A

机译:小鼠NK细胞激活受体NKG2D在1.95 A处的晶体结构

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摘要

NKG2D, a homodimeric lectin-like receptor, is a unique stimulatory molecule that is found on natural killer cells, T cells and activated macrophages. The natural ligands for murine NKG2D are distant major histocompatibility complex homologs, retinoic acid early transcript (Rae1) and H-60 minor histocompatibility antigen. The crystal structure of the extracellular region of murine NKG2D reveals close homology with other C-type lectin receptors such as CD94, Ly49A, rat MBP-A and CD69. However, the precise mode of dimeric assembly varies among these natural killer receptors, as well as their surface topography and electrostatic properties. The NKG2D structure provides the first structural insights into the role and ligand specificity of this stimulatory receptor in the innate and adaptive immune system.
机译:NKG2D是一种同型二聚凝集素样受体,是一种独特的刺激性分子,存在于自然杀伤细胞,T细胞和活化的巨噬细胞上。鼠NKG2D的天然配体是遥远的主要组织相容性复合物同源物,视黄酸早期转录本(Rae1)和H-60较小的组织相容性抗原。鼠NKG2D胞外区的晶体结构显示出与其他C型凝集素受体如CD94,Ly49A,大鼠MBP-A和CD69的紧密同源性。但是,二聚体组装的精确模式在这些自然杀伤受体之间以及它们的表面形貌和静电性质方面有所不同。 NKG2D结构提供了对这种刺激性受体在先天和适应性免疫系统中的作用和配体特异性的第一结构见解。

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