MGI:95564Male mice hemizygous for a targeted null mutation exhibit macroorchidism associated with more rapid Sertoli cell proliferation, altered dendritic spines of visual cortex pyramidal cells and subtle differences in a variety of behavioral tests. Homozygous females show behavioral abnormalities.
FMR1基因,全称Fragile X Mental Retardation 1,是导致脆性X综合征(FXS)的主要基因。FXS是最常见的遗传性智力障碍,通常是由于FMR1基因中的CGG重复序列扩张导致基因表达缺失引起的。FMR1基因编码FMRP蛋白,这是一种在正常大脑发育中发挥关键作用的蛋白质。FMRP在大脑中与突触功能密切相关,参与突触可塑性和神经元信号传导,对学习和记忆至关重要。
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