首页> 美国政府科技报告 >Complexity of DRw6 DR5 Haplotypes in American Blacks Demonstrated by Serology, Cellular Typing, and Restriction Fragment Length Polymorphism Analysis.
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Complexity of DRw6 DR5 Haplotypes in American Blacks Demonstrated by Serology, Cellular Typing, and Restriction Fragment Length Polymorphism Analysis.

机译:美国黑人DRw6 DR5单倍型的复杂性通过血清学,细胞分型和限制性片段长度多态性分析得到证实。

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摘要

The class II region of the human major histocompatibility complex encodes highly polymorphic heterodimeric cell surface glycoproteins (DR, DQ, and DP), which function in the induction of the normal immune response and are responsible in part for allograft rejection and autoimmune disease susceptibility. The polymorphic residues of the class II polypeptides are localized to the amino terminal domains and are clustered into variable regions. In the predicted three-dimensional structure of the class II molecule, the majority of the polymorphic sites reside in the antigen-binding T-cell receptor recognition site suggesting the importance of these residues in controlling antigen recognition and allograft rejection. HLA-D regions that encode molecules carrying DR serologic determinants share general structural features suggesting a common origin. The DRw52 subregion of most of these haplotypes encodes one nonpolymorphic gene (DRA) and three DR genes.

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