Chains and heterogens:
PDB Chain Sequences:
>1bl9A (A:) aeqyqgaasavdpahvvrtngapdmsesefneakqiyfqrcagchgvlrkgatgkpltpd itqqrgqqylealitygtplgmpnwgssgelskeqitlmakyiqhtppqppewgmpemre swkvlvkpedrpkkqlndldlpnlfsvtlrdagqialvdgdskkivkvidtgyavhisrm sasgryllvigrdaridmidlwakeptkvaeikigiearsvesskfkgyedrytiagayw ppqfaimdgetlepkqivstrgmtvdtqtyhpeprvaaiiashehpefivnvketgkvll vnykdidnltvtsigaapflhdggwdsshryfmtaannsnkvavidskdrrlsalvdvgk tphpgrganfvhpkygpvwstshlgdgsisligtdpknhpqyawkkvaelqgqgggslfi kthpksshlyvdttfnpdarisqsvavfdlknldakyqvlpiaewadlgegakrvvqpey nkrgdevwfsvwngkndssalvvvddktlklkavvkdprlitptgkfnvyntqhdvy
>1bl9B (B:) aeqyqgaasavdpahvvrtngapdmsesefneakqiyfqrcagchgvlrkgatgkpltpd itqqrgqqylealitygtplgmpnwgssgelskeqitlmakyiqhtppqppewgmpemre swkvlvkpedrpkkqlndldlpnlfsvtlrdagqialvdgdskkivkvidtgyavhisrm sasgryllvigrdaridmidlwakeptkvaeikigiearsvesskfkgyedrytiagayw ppqfaimdgetlepkqivstrgmtvdtqtyhpeprvaaiiashehpefivnvketgkvll vnykdidnltvtsigaapflhdggwdsshryfmtaannsnkvavidskdrrlsalvdvgk tphpgrganfvhpkygpvwstshlgdgsisligtdpknhpqyawkkvaelqgqgggslfi kthpksshlyvdttfnpdarisqsvavfdlknldakyqvlpiaewadlgegakrvvqpey nkrgdevwfsvwngkndssalvvvddktlklkavvkdprlitptgkfnvyntqhdvy