所谓黏性末端黏状末端(英语:Sticky Ends),指DNA重组技术中,DNA限制酶在切开DNA的双链结构时,形成的突出末端,与平末端(Blunt Ends)相对。平末端则是上述切割过程中不突出的末端,所以DNA重组时操作难度稍大于黏性末端。

一种黏性末端,由EcoRI切割而成。
一种平末端,由SmaI切割而成。

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