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胰岛素是胰腺中胰岛(或称Langerhans小岛)的β-细胞所分泌的一种激素。正常人的胰腺中大约含有200万个胰岛,β细胞占全部胰岛细胞的60～80％。胰岛素是由两条多肽链共51个氨基酸组成的蛋白质。1965年9月我国科学工作者在世界上用全化学方法合成具有生物活性的结晶牛胰岛素。继而从1967年开始对胰岛素的结构与功能关系又做了深入的研究,取得很大成绩。应用x射线衍射法于1971年完成了2.5A°分辨率的胰岛素分子结构的分析,1972年又获得了
Insulin is a hormone secreted by the beta cells of the pancreas islet (or Langerhans islets). Normal human pancreas contains about 2 million islets, β-cells account for 60 to 80% of all islet cells. Insulin is a protein consisting of 51 amino acids of two polypeptide chains. September 1965 Chinese scientists in the world using the whole chemical synthesis of bioactive crystalline bovine insulin. Then from 1967 on insulin structure and function of the relationship has done in-depth study and achieved great success. The application of x-ray diffraction in 1971 completed a 2.5A ° resolution analysis of insulin molecular structure, obtained in 1972