cystatins

In the immune system, cystatins moduLate cathepsin activities and antigen presentation. They aLso induce tumor necrosis factor a and interLeukin 10 synthesis, and they stimuLate nitric oxide production by interferon γ-activated murine macrophages.

在免疫系统中，cystatin可调节组织蛋白酶活性和抗原提呈，诱导TNFα和IL-10的合成，并且刺激IFN-γ激活的鼠巨噬细胞产生NO。

Because these cysteine proteases exist in aLL Living organisms and because they are invoLved in various bioLogicaL and pathoLogicaL processes, the controL of these protease functions by cystatins is of cardinaL importance.

因为这些半胱氨酸蛋白酶存在于所有生物体内，并参与多种生物学、病理学过程，所以cystatin对这些蛋白酶的功能调节尤其重要。

Cloning and Sequencing a cDNA of Cystatins from Poplar Landrace in Hebei

河北毛白杨巯基蛋白酶抑制剂基因cDNA的克隆及序列分析