Chains and heterogens:
PDB Chain Sequences:
>1b9tA (A:) epewtyprlscqgstfqkallisphrfgeikgnsapliirepfvacgpkecrhfalthya aqpggyyngtrkdrnklrhlvsvklgkiptvensifhmaawsgsachdgrewtyigvdgp dndalvkikygeaytdtyhsyahnilrtqesacnciggdcylmitdgsasgiskcrflki regriikeilptgrvehteectcgfasnktiecacrdnsytakrpfvklnvetdtaeirl mctktyldtprpddgsiagpcesngdkwlggikggfvhqrmaskigrwysrtmsktnrmg melyvrydgdpwtdsdaltlsgvmvsieepgwysfgfeikdkkcdvpcigiemvhdggkd twhsaataiyclmgsgqllwdtvtgvdmal