锌指结构：最普遍的核酸识别元件

锌指是最大的DNA结合蛋白家庭，是识别DNA最有效、最成功的一种结构元件。其模块性结构特点及与核酸作用的相对简单性，使其成为研究蛋白-核酸相互作用的理想材料，以及人为设计筛选新的核酸结合蛋白的最佳元件。

Zinc finger: The mostcommon motif for nucleic acids recognition

Within the known classes of DNA binding proteins, t he zinc finger is the greatest family and are nature′s most successful designs for DNAbinding proteins. Owing to the modular nature and its simplicity of int eraction with nucleic acids, the zinc finger motif provides a good candidate for the study of proteinnucleic acids interaction and the rational design of site specific nucleic acids binding proteins.