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DNA结构,不只有双螺旋
实际上,DNA除了双螺旋结构,还可以形成其他的非B型DNA结构(图一B-G),包括左手双螺旋的Z DNA(B)、鸟嘌呤富集区域形成的G-四链体(G-quadruplex)(C)、DNA串联重复错配形成的Slipped ...
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