Chains and heterogens:
PDB Chain Sequences:
>1qfkH (H:) ivggkvcpkgecpwqvlllvngaqlcggtlintiwvvsaahcfdkiknwrnliavlgehd lsehdgdeqsrrvaqviipstyvpgttnhdiallrlhqpvvltdhvvplclpertfsert lafvrfslvsgwgqlldrgatalelmvlnvprlmtqdclqqsrkvgdspniteymfcagy sdgskdsckgdsggphathyrgtwyltgivswgqgcatvghfgvytrvsqyiewlqklmr seprpgvllrapfp
>1qfkH (H:) ivggkvcpkgecpwqvlllvngaqlcggtlintiwvvsaahcfdkiknwrnliavlgehd lsehdgdeqsrrvaqviipstyvpgttnhdiallrlhqpvvltdhvvplclpertfsert lafvrfslvsgwgqlldrgatalelmvlnvprlmtqdclqqsvgdspniteymfcagysd gskdsckgdsggphathyrgtwyltgivswgqgcatvghfgvytrvsqyiewlqklmrse prpgvllrapfp
>1qfkL (L:) qcasspcqnggsckdqlqsyicfclpafegrncethkddqlicvnenggceqycsdhtgt krscrchegyslladgvsctptveypcgkipilekr