Chains and heterogens:
PDB Chain Sequences:
>1g6aA (A:) skfqqveqdvkaievslsarigvsvldtqngeywdyngnqrfpltstfktiacakllyda eqgkvnpnstveikkadlvtyspviekqvgqaitlddacfatmttsdntaaniilsavgg pkgvtdflrqigdketrldriepdlnegklgdlrdtttpkaiastlnkflfgsalsemnq kkleswmvnnqvtgnllrsvlpagwniadksgaggfgarsitavvwsehqapiivsiyla qtqasmeerndaivkighsifdvyts