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表 1 Usher综合征的致病位点和基因
位点 定位 基因 蛋白 功能 USH1B 11q13.5 MYO7A myosin Ⅶa 内耳和视网膜:运输 USH1C 11p15.1 USH1C harmonin 内耳和视网膜:支架 USH1D 10q22.1 CDH23 cadherin23 内耳:形成顶端连接;视网膜:维持纤毛周边平衡 USH1E 21q21 未知 未知 未知 USH1F 10q21.1 PCDH15 protocadherin15 内耳:形成顶端连接;视网膜:维持纤毛周边平衡 USH1G 17q25.1 USH1G SANS 内耳和视网膜:支架和蛋白质交换 USH1H 15q22-23 未知 未知 未知 USH1J 15q25.1 CIB2 CIB2 内耳和视网膜:参与信号反应 USH2A 1q41 USH2A usherin 内耳:静纤毛踝区形成和耳蜗发育;视网膜:维持纤毛周边平衡 USH2C 5q14.3 GPR98 VLGR1 内耳:静纤毛踝区形成和耳蜗发育;视网膜:维持纤毛周边平衡 USH2D 9q32 DFNB31 whirlin 内耳:支架和耳蜗发育;视网膜:支架 USH3A 3q25.1 USH3A clarin-1 内耳和视网膜:突触信号传导 USH3B 20q 未知 未知 未知 -
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