运铁蛋白(transferrin,又译转铁蛋白,简称Tf)是一种能转运Fe(Ⅲ)的铁结合蛋白,广泛分布于脊椎动物的体液和细胞中.有三类Tf,分别称为血清运铁蛋白(serotransferrin,或siderophilin,嗜铁蛋白)、卵运铁蛋白(ovotransferrin,或conalbumin,伴清蛋白)和乳运铁蛋白(lacotransferrin,或lacoferrin,乳铁蛋白).它们都是具两个Fe结合位点的单肽链糖蛋白分子,有40%的氨基酸序列和N端、C端序列是彼此完全相同的.因此,这三类 Transferrin, also known as Tf, is an iron-binding protein that transports Fe (III) and is widely distributed in vertebrate body fluids and cells.Three types of Tf are known as serum transport Serotransferrin, or siderophilin, ovotransferrin, or conalbumin, with albumin, and lactotransferrin, or lacoferrin, lactoferrin, all of which have two Fe-binding Site of the single-peptide glycoprotein, 40% of the amino acid sequence and N-terminal, C-terminal sequences are exactly the same with each other.Therefore, these three categories