Why proteins, which start as long, simple chains of amino acids manufactured by genes, spontaneously fold into the shapes they do remains one of the greatest unsolved mysteries in modern biology.

• 为什么蛋白质是以基因制造成的长长的氨基酸单链开始，而又会自动地折叠成它们以后的各种形状，仍是现代生物学上一个最大的未解之谜)。