1a9o PO4 1a9p 1a9q HPA 1a9r HPA 1a9s 1a9t 1b8n 1b8o 1fxu 1lv8 1lvu 1pbn 1v48 1vfn HPA 2ai1 P1G 2ai2 P1D 2ai3 P2G 2qpl 3fuc 9D9 3pnp PO4 4pnp PO4