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MICA and MICB genes: can the enigma of their polymorphism be resolved?

机译:MICA和MICB基因:它们的多态性之谜能否解决?

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The human MHC class I chain-related genes (MICA and MICB) are located within the HLA class I region of chromosome 6. Their organization, expression and products differ considerably from classical HLA class I genes. MIC proteins are considered to be markers of "stress" in the epithelia, and act as ligands for cells expressing a common activatory natural killer-cell receptor (NKG2D). Molecular models are now available for the MICA protein, both bound and complexed with NKG2D. MICA molecules appear to be highly flexible and polymorphic, although the functional relevance and implications of their polymorphism have yet to be fully discerned.
机译:人类MHC I类链相关基因(MICA和MICB)位于6号染色体的HLA I类区域内。它们的组织,表达和产物与经典的HLA I类基因有很大不同。 MIC蛋白被认为是上皮细胞“应激”的标志物,并充当表达共同的活化性自然杀伤细胞受体(NKG2D)的细胞的配体。现在可得到与NKG2D结合并复合的MICA蛋白的分子模型。尽管尚未充分认识到它们的多态性在功能上的相关性和含义,但MICA分子似乎具有高度的柔韧性和多态性。

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