淀粉样蛋白是“由多种蛋白前质衍生的一组病态纤维”,是构成淀粉样纤维的主要成份。其分子结构随淀粉样变病型而不同,但光学结构及超微结构大多类似。因胰岛淀粉样变较难溶解,故不易对其主要蛋白成分进行分离、精制。胰岛淀粉样蛋白是由37个氨基酸组成的多肽,存在2和7位胱氨酸残基之间℃端呈氨基化。其基因位于第12染色体,由三个节段组成。2和3节段是由89个氨 Amyloid is a group of morbid fibers derived from a variety of protein precursors and is a major constituent of amyloid fibers. The molecular structure with the different types of amyloidosis, but the optical structure and ultrastructure are mostly similar. As islet amyloidosis more difficult to dissolve, it is not easy to separate the main protein components, refined. Islet amyloid is a polypeptide of 37 amino acids with a C-terminal amination between the 2 and 7-position cystine residues. Its gene is located on chromosome 12 and consists of three segments. The 2 and 3 segments are made of 89 ammonia