Chains and heterogens:
PDB Chain Sequences:
>1qcyA (A:) tqldivivldgsnsiypwdsvtaflndllkrmdigpkqtqvgivqygenvthefnlnkys steevlvaakkivqrggaqtmtalgtdtarkeafteargarrgvkkvmvivtdgeshdnh rlkkviqdcedeniqrfsiailgsynrgnlstekfveeiksiaseptekhffnvsdelal vtivktlgerifa