A bony fish immunological receptor of the NITR multigene family mediates allogeneic recognition.

A bony fish immunological receptor of the NITR multigene family mediates allogeneic recognition.
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NITR多基因家族的骨鱼免疫受体介导同种异体识别。

DOI:
10.1016/j.immuni.2008.05.018
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发表时间:
2008-08-15
期刊:
影响因子:
32.4
通讯作者:
Ostrov, David A.
Ostrov, David A.
中科院分区:
医学1区
文献类型:
--
作者:
Cannon, John P.;Haire, Robert N.;Magis, Andrew T.;Eason, Donna D.;Winfrey, Kelley N.;Prada, Jose A. Hernandez;Bailey, Kate M.;Jakoncic, Jean;Litman, Gary W.;Ostrov, David A.

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新的免疫类型受体(NITR)包括一个非常大的,多样化的激活/抑制受体家族,已在硬骨鱼中发现。在这项研究中,我们描述了一种激活的NITR的结构,该NITR由细胞毒性NK样细胞系表达,并特异性地结合同种异体B细胞靶标。NITR免疫球蛋白可变(V)型结构域中的单一氨基酸残基解释了相互作用的特异性。X射线结晶学分析表明:(1)NITR的V型结构域形成类似于通过重排抗原结合受体形成的异二聚体的同源二聚体;(2)NITR二聚体的两个亚基在CDR1上形成配体结合面,决定了非我靶标的特异性。在免疫功能的进化中,似乎一种特定的NK类型的天然识别可能是由一个复杂的V结构胚系多基因家族介导的,这些结构类似于适应性免疫反应的躯体多样性。
Novel immune-type receptors (NITRs) comprise an exceptionally large, diversified family of activating/inhibitory receptors that has been identified in bony fish. In this study, we characterize the structure of an activating NITR that is expressed by a cytotoxic NK-like cell line and specifically binds an allogeneic B cell target. A single amino acid residue within the NITR immunoglobulin variable (V)-type domain accounts for specificity of the interaction. Structures solved by x-ray crystallography reveal: (1) the V-type domains of NITRs form homodimers resembling heterodimers formed by rearranging antigen binding receptors and (2) both subunits of NITR dimers form ligand-binding surfaces in CDR1 that determine specificity for the nonself target. In the evolution of immune function, it appears that a specific NK-type of innate recognition may be mediated by a complex germline multigene family of V structures resembling those that are somatically diversified in adaptive immune responses.
DOI: 10.1107/s0907444904019158
发表时间: 2004-12-01
影响因子: 2.2
作者:
Emsley, P;Cowtan, K
通讯作者: Cowtan, K
DOI: 10.1016/s0969-2126(03)00095-9
发表时间: 2003-06-01
期刊: STRUCTURE
影响因子: 5.7
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发表时间: 1998-09-01
期刊: ACTA CRYSTALLOGRAPHICA SECTION D-BIOLOGICAL CRYSTALLOGRAPHY
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通讯作者: Warren, GL
DOI: 10.1073/pnas.0401119101
发表时间: 2004-05-25
影响因子: 11.1
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通讯作者: Saito, T
DOI: 10.1006/jmbi.1996.0548
发表时间: 1996-10-11
影响因子: 5.6
作者:
MacCallum, RM;Martin, ACR;Thornton, JM
通讯作者: Thornton, JM