>6d4i_B mol:protein length:223 Fc fragment of IgG2STCPPCPAELLGGPSVFLFPPKPKDTLMISRTPEVTCVVVDVSQEEPDVKFNWYVDGVEVHNAQTKPREEQFNSTYRVVSVLTVTHQDWLNGKEYTCKVSNKALPAPRQKTVSKTKGQPREPQVYTLPPPREELTKNQVSLTCLVKGFYPSDIVVEWASNGQPENTYKTTPPVLDSDGSYFLYSKLTVDKSRWQQGNTFSCSVMHEALHNHYTQKSLSLSPGK