核酸酶超敏感位点(nuclease-supersensitive site)

互联网2013-11-15

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在染色质DNA中对DNaseⅠ表现出高度敏感的区域，缺少核小体。这种区域通常很短，最长也不过几百bp。该位点含有特异的DNA序列，为特异性DNA结合蛋白所识别，因此，它参与了基因表达的调控。另外，处于活性转录的区域对核酸酶也十分敏感。

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