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核糖核酸酶抑制因子 (ＲｉｂｏｎｕｃｌｅａｓｅＩｎｈｉｂｉｔｏｒ,ＲＩ)是一种存在于胞浆中的酸性糖蛋白 ,分子量为50ｋＤａ。ＲＩ是核糖核酸酶 (ＲＮａｓｅ)的抑制剂 ,它与ＲＮａｓｅ紧密结合 ,形成马蹄形的立体结构。在ＲＩ的结构中 ,有 11对二硫键和 8个游离的巯基。巯基
Ribonuclease Inhibitor (RI) is an acidic glycoprotein present in the cytoplasm with a molecular weight of 50 kDa. RI is an inhibitor of ribonuclease (RNase), which binds closely to RNase to form a horseshoe-shaped three-dimensional structure. In the structure of RI there are 11 pairs of disulfide bonds and 8 free thiols. Mercapto