Chains and heterogens:
PDB Chain Sequences:
>1c13A (A:) aqsvpwgisrvqapaahnrgltgsgvkvavldtgisthpdlnirggasfvpgepstqdgn ghgthvagtiaalnnsigvlgvapnaelyavkvlgasgsgsvssiaqglewagnngmhva nlslgspspsatleqavnsatsrgvlvvaasgnsgagsisyparyanamavgatdqnnnr asfsqygagldivapgvnvqstypgstyaslngtsmatphvagaaalvkqknpswsnvqi rnhlkntatslgstnlygsglvnaeaatr