组蛋白
组蛋白（英语：histone）是真核生物体细胞染色质搭原核细胞中个碱性蛋白质，搭DNA共同组成核小体结构。伊拉是染色质个主要蛋白质组分，作为DNA缠绕个线轴，并拉基因调控中发挥作用，但是原核细胞组蛋白对基因调控个作用交关微弱。
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