补体受体一型 (ＣＲ1 )是内源性补体活性调节蛋白家族成员。ＥＣＲ1具有粘附、加速清除免疫复合物 (ＩＣ)等广泛生理作用。参与自身免疫性疾病、肿瘤等疾病的发生发展。在循环中 ,机体免疫系统识别抗原或病原体时生成ＩＣ ,可快速激活补体 ,共价结合Ｃ3ｂ并通过Ｃ3ｂ调理作用结 Complement receptor type 1 (CR1) is a member of the family of endogenous complement regulatory proteins. ECR1 has a wide range of physiological effects such as adhesion and accelerated clearance of immune complexes (ICs). Participate in autoimmune diseases, such as the occurrence of tumors and development. In the circulation, the body’s immune system generates ICs when it recognizes antigens or pathogens, rapidly activating complement, covalently attaching to C3b and acting through the C3b-conditioning junction