Mapping of epitopes on the 86 kDa subunit of the Ku autoantigen.

Mapping of epitopes on the 86 kDa subunit of the Ku autoantigen.
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Ku 自身抗原 86 kDa 亚基上的表位作图。

DOI:
10.1016/0161-5890(90)90120-o
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发表时间:
1990
影响因子:
3.6
通讯作者:
Yaneva,M
Yaneva,M
中科院分区:
医学3区
文献类型:
--
作者:
Wen,J;Yaneva,M

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风湿性疾病的患者会产生一种称为Ku的核蛋白抗原的自身抗体。Ku抗原已被鉴定为由两种多肽组成的非组蛋白DNA结合蛋白复合物:86 kDa和70 kDa。初步的竞争实验与四个单克隆抗体特异性的86 kDa的Ku蛋白亚基的建议有一个以上的表位上的多肽。为了确定这些表位的区域,从5'和3'端进行cDNA缺失。免疫印迹法检测表达蛋白的免疫反应性。该多肽的C端氨基酸667-708之间的40个氨基酸区域是结合单克隆抗体和自身免疫抗体所必需的。在该区域内,我们区分了单克隆抗体的三个表位。自身免疫抗体结合的关键序列在同一区域,氨基酸689-708之间。四种单克隆抗体均不能阻断自身抗体的结合。这些结果的抗Ku自身抗体反应的病因的影响进行了讨论。
Patients with rheumatic disorders develop autoantibodies to a nuclear protein antigen termed Ku. The Ku antigen has been identified as a non-histone DNA-binding protein complex composed of two polypeptides: 86 kDa and 70 kDa. Initial competition experiments with four monoclonal antibodies specific for the 86 kDa subunit of Ku protein suggested there was more than one epitope on this polypeptide. To determine the region for these epitopes, cDNA deletions were made from both 5' and 3' ends. The immunoreactivity of the expressed proteins was assayed by immunoblotting. A 40 amino acids region located near theC-terminus of the polypeptide between amino acids 667–708 was essential for binding the monoclonal and autoimmune antibodies. Within this region, we differentiated three epitopes for the monoclonal antibodies. The sequence critical for binding of the autoimmune antibodies was in the same region, between amino acids 689–708. None of the four monoclonal antibodies blocked the binding of the autoantibodies. The implications of these results for the etiology of the anti-Ku autoantibody response are discussed.
编码 p70 (Ku) 狼疮自身抗原的 cDNA 的分子克隆。
DOI: --
发表时间: 1989
期刊: The Journal of biological chemistry
影响因子: --
作者:
Reeves,WH;Sthoeger,ZM
通讯作者: Sthoeger,ZM
自身免疫性疾病患者血清中抗 Ku 蛋白的抗体。
DOI: --
发表时间: 1989
影响因子: 4.6
作者:
M. Yaneva;F. Arnett
通讯作者: F. Arnett
DOI: 10.1016/0092-8674(89)90287-0
发表时间: 1989-10-20
期刊: CELL
影响因子: 64.5
作者:
WRAITH, DC;SMILEK, DE;MCDEVITT, HO
通讯作者: MCDEVITT, HO
DOI: 10.1016/s0021-9258(18)67534-9
发表时间: 1986-08
期刊: The Journal of biological chemistry
影响因子: --
作者:
T. Mimori;J. Hardin
通讯作者: T. Mimori;J. Hardin
Ki (Ku, p70/p80) 自身抗原的鉴定和抗 Ki 自身抗体反应性的分析。
DOI: --
发表时间: 1986
期刊: Journal of immunology (Baltimore, Md. : 1950)
影响因子: --
作者:
Francoeur,AM;Peebles,CL;Gompper,PT;Tan,EM
通讯作者: Tan,EM