>d1dn2a2 b.1.1.2 (A:342-443) Immunoglobulin (constant domains of L and H chains) {Fc (human) IgG1 class} qprepqvytlppsreemtknqvsltclvkgfypsdiavewesngqpennykttppvldsd gsfflyskltvdksrwqqgnvfscsvmhealhnhytqkslsl