This example shows that the PDB archive not only is a high-quality source of information for experts in crystallography but also can serve as a source of knowledge and inspiration for people from other disciplines and professions who are fascinated by three-dimensional protein structures. A seemingly simple, and perhaps somewhat strange, image, such as those shown in Fig. 1, can introduce students to the diversity and complexity of protein structures.

中文翻译：

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 对称的教训

这个例子表明，PDB 档案不仅是晶体学专家的高质量信息来源，而且可以作为其他学科和专业对三维蛋白质结构着迷的人的知识和灵感来源。一个看似简单，也许有点奇怪的图像，如图 1 所示，可以向学生介绍蛋白质结构的多样性和复杂性。