联会复合体(synaptonemal complex,SC)
关键词: 联会复合体来源: 互联网
同源染色体配对联会形成的一种梯状结构,在电镜下可见其由三个平行的部分组成:两侧为侧生成分,电子密度较高,由约宽10nm的纤维组成,成分主要为DNA,同时还包括RNA和组蛋白;两侧生成分之间,为电子密度较低中间区,由横向排列的蛋白质纤维组成,主要成分为非组蛋白,在中间区的中间有一电子密集的梯状结构,仍由蛋白质纤维组成,称为中央组分。
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