Chains and heterogens:
PDB Chain Sequences:
>1bquA (A:) pgssglppekpknlscivnegkkmrcewdggrethletnftlksewathkfadckakrdt ptsctvdystvyfvnievwveaenalgkvtsdhinfdpvykvkpnpphnlsvinseelss ilkltwtnpsiksviilkyniqyrtkdastwsqippedtastrssftvqdlkpfteyvfr ircmkedgkgywsdwseeasgityedrpskepsfw
>1bquA (A:) glppekpknlscivnegkkmrcewdggrethletnftlksewathkfadckakrdtptsc tvdystvyfvnievwveaenalgkvtsdhinfdpvykvkpnpphnlsvinslssilkltw tnpsiksviilkyniqyrtkdastwsqippedtastrssftvqdlkpfteyvfrircmke dgkgywsdwseeasgityedrpskepsf
>1bquB (B:) pgssglppekpknlscivnegkkmrcewdggrethletnftlksewathkfadckakrdt ptsctvdystvyfvnievwveaenalgkvtsdhinfdpvykvkpnpphnlsvinseelss ilkltwtnpsiksviilkyniqyrtkdastwsqippedtastrssftvqdlkpfteyvfr ircmkedgkgywsdwseeasgityedrpskepsfw