免疫球蛋白的结构 CDR1 (4) H CDR2 (15CH! CDR3 (6) CDR C52 CDR3 (8) Hinge region H Chain 440 amino acids L Chain 220 amino acids CH2 H chain 4 or 5 domains L Chain 2 domains Each domain has intra CH2 disulfide bridge of 60 amino acids. There are 5 classes of H chain L Chain H chain (IgG,IgM,IgA,IgD,and IgE) CD1 24-34(10) CD131-35(4) There are two class of L chains CD2 CD3 9- CD2 50-65(15 〔6) CD3 96-102(d (Llambda and Kappa) (a) 免疫球蛋白的结构 轻 链 重 链