Chains and heterogens:
PDB Chain Sequences:
>1pkwA (A:) maekpklhyfnargrmestrwllaaagvefeekfiksaedldklrndgylmfqqvpmvei dgmklvqtrailnyiaskynlygkdikeralidmyiegiadlgemilllpvcppeekdak lalikekiknryfpafekvlkshgqdylvgnklsradihlvellyyveeldsslissfpl lkalktrisnlptvkkflqpgsprkppmdeksleearkifrf
>1pkwA (A:) aekpklhyfnargrmestrwllaaagvefeekfiksaedldklrndgylmfqqvpmveid gmklvqtrailnyiaskynlygkdikeralidmyiegiadlgemilllpvcppeekdakl alikekiknryfpafekvlkshgqdylvgnklsradihlvellyyveeldsslissfpll kalktrisnlptvkkflqpgsprkppmdeksleearkifrf
>1pkwB (B:) maekpklhyfnargrmestrwllaaagvefeekfiksaedldklrndgylmfqqvpmvei dgmklvqtrailnyiaskynlygkdikeralidmyiegiadlgemilllpvcppeekdak lalikekiknryfpafekvlkshgqdylvgnklsradihlvellyyveeldsslissfpl lkalktrisnlptvkkflqpgsprkppmdeksleearkifrf
>1pkwB (B:) aekpklhyfnargrmestrwllaaagvefeekfiksaedldklrndgylmfqqvpmveid gmklvqtrailnyiaskynlygkdikeralidmyiegiadlgemilllpvcppeekdakl alikekiknryfpafekvlkshgqdylvgnklsradihlvellyyveeldsslissfpll kalktrisnlptvkkflqpgsprkppmdeksleearkifrf