Chains and heterogens:
PDB Chain Sequences:
>1bi7A (A:) dqqyecvaeigegaygkvfkardlknggrfvalkrvrvqtgeegmplstirevavlrhle tfehpnvvrlfdvctvsrtdretkltlvfehvdqdlttyldkvpepgvptetikdmmfql lrgldflhshrvvhrdlkpqnilvtssgqikladfglariysfqmaltsvvvtlwyrape vllqssyatpvdlwsvgcifaemfrrkplfrgssdvdqlgkildviglpgeedwprdval prqafhsksaqpiekfvtdidelgkdlllkcltfnpakrisaysalshpyfq
>1bi7A (A:) dqqyecvaeigegaygkvfkardlknggrfvalkrvrvqehpnvvrlfdvctvsrtdret kltlvfehvdqdlttyldkvpepgvptetikdmmfqllrgldflhshrvvhrdlkpqnil vtssgqikladfglariysfqmaltsvvvtlwyrapevllqssyatpvdlwsvgcifaem frrkplfrgssdvdqlgkildviglpgeedwprdvalprqafhsksaqpiekfvtdidel gkdlllkcltfnpakrisaysalshpyfq
>1bi7B (B:) epsadwlataaargrveevralleaganpnapnsygrrpiqvmmmgsarvaellllhgae pncadpatltrpvhdaaregfldtlvvlhragarldvrdawgrlpvdlaeelghrdvary lraaa