Chains and heterogens:
PDB Chain Sequences:
>1dowA (A:) kahvlaasveqatenflekgdkiakesqflkeelvvavedvrkqgdlmksaagefaddpc ssvkrgnmvraarallsavtrlliladmadvykllvqlkvvedgilklrnagneqdlgiq ykalkpevdklnimaakrqqelkdvgnrdqmaaargilqknvpilytasqaclqhpdvaa ykanrdliykqlqqavtgisnaaqa