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DNA偶合物构建思路
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<h2 style="color: red;"> <div style="color: black !important; font-family: 'Times New Roman', SimSun, serif !important, line-height:1.5;"> == protein == === gene engineering and click chemistry === *'''Click Chemistry:通过叠氮基团和炔基(环炔)环加成生成三唑环结构'''<br> [[File:Click_Chemistry.jpg|center|thumb|600px|Click_Chemistry]] *'''''构建生物正交系统:<br>1.在目标蛋白末端基因(N端)插入琥珀密码子(TAG-终止密码子)<br>2.在培养系统中引入特定的tRNA(特异性识别TAG位点)与其对应的氨酰-tRNA合成酶(能将p-Azidophenylalanine(含有一个叠氮基团)这个非天然氨基酸连接到tRNA上)<br>3.BCN-DNA(BNN含环炔)<br> [[File:生物正交.png|center|thumb|600px|生物正交]] === zinc finger protein(zif268) === *'''zif268:含三个“锌指”模块,可插入连续的三个大沟(3×3)中,识别特定的基因序列(例如:5'-GCG TGG GCG-3')<br> [[File:锌指蛋白_DNA.png|center|thumb|400px|锌指蛋白DNA偶联物]] === the basic leucine-zipper protein(GCN4) === *'''GCN4:通过形成二聚体,像夹子一样夹住双螺旋两侧的大沟中(通常和目标蛋白通过基因工程用连接子连接) <br> [[File:GCN4_Tbg.png|center|thumb|600px|GCN_Tbg]] === SNAP-tag === *'''SNAP-tag:一种蛋白质标签,可与底物 benzylguanine (BG) 发生共价结合,BG通常可用被修饰在T上面'''
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