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首页> 外文期刊>Proceedings of the National Academy of Sciences of the United States of America >Plasticity in the organization and sequences of human KIR/ILT gene families
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Plasticity in the organization and sequences of human KIR/ILT gene families

机译:人类KIR / ILT基因家族的组织和序列的可塑性

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摘要

The ≈1-Mb leukocyte receptor complex at 19q13.4 is a key polymor- phic immunoregion containing all of the natural killer-receptor KIR and related ILT genes. When the organization of the leukocyte receptor complex was compared from two haplotypes, the gene content in the KIR region varied dramatically, with framework loci flanking regions of widely variable gene content. The ILT-genes were more stable in number except for ILr6, which was present only in one haplotype. Analysis of ALu repeats and comparison of KIR gene sequences, which are over 90/100 identical. are consistent with a recent origin. KIR genesis was followed by extensive duplication/deletion as well as intergenic sequence exchange. reminiscent of MHC class Ⅰ genes, which provide KIR ligands.
机译:位于19q13.4处的≈1-Mb白细胞受体复合物是关键的多形免疫区域,包含所有自然杀伤受体KIR和相关的ILT基因。当从两种单倍型中比较白细胞受体复合物的组织时,KIR区的基因含量变化很大,框架基因座侧翼区的基因含量变化很大。除了仅在一种单倍型中存在的ILr6,ILT基因在数量上更稳定。 ALu重复序列的分析和KIR基因序列的比较(超过90/100相同)。与最近的来历一致。 KIR发生之后是广泛的复制/删除以及基因间的序列交换。让人想起提供KIR配体的MHCⅠ类基因。

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