Chains and heterogens:
PDB Chain Sequences:
>1ce7A (A:) yergdldvtaqttgagyfsfitllrdyvssgsfsnaipllsqsggggeagrfvlveltns ggdgitvaidvtnlyvvayqagsqsyflsgpggrhgftgttrsslpfngsypdleqyggq rkqiplgidqliqsvtalkfpgstrtgarsililiqmiseaarfnpilwrarqyinsgas flpdvymleletswgqqstqvqhstdgvfnnpialadpgggvtltnvrdviaslaimlfv c
>1ce7B (B:) csaseptvrivgrngmnvdvrdddfhdgnqiqlwpsksnndpnqlwtikrdgtirsngsc lttygytagvyvmifdcatavgeatvwqiwgngtiinprsnlvlaassgikgttltvqtl dytlgqgwlagndtaprevtiygfndlcmesgggsvtvetcssgkadkwalygdgsirpe qnqaqcltsggdsvagvnivscsgaasgqrwvftnegailnlknglamdvanpgggriii ypatgkpnqmwlpvf