Chains and heterogens:
PDB Chain Sequences:
>1gsa_ (-) miklgivmdpianinikkdssfamlleaqrrgyelhymemgdlylingearahtrtlnvk qnyeewfsfvgeqdlpladldvilmrkdppfdtefiyatyileraeekgtlivnkpqslr dcneklftawfsdltpetlvtrnkaqlkafwekhsdiilkpldgmggasifrvkegdpnl gviaetltehgtrycmaqnylpaikdgdkrvlvvdgepvpyclaripqggetrgnlaagg rgeprpltesdwkiarqigptlkekglifvgldiigdrlteinvtsptcireieaefpvs itgmlmdaiearlq