Chains and heterogens:
PDB Chain Sequences:
>2fr7A (A:) mttapslvpvttpsqhgagvphlgidpfaldyfadpypeqetlreagpvvyldkwnvygv aryaevyavlndpltfcssrgvglsdfkkekpwrppslileadppahtrtravlskvlsp atmkrlrdgfaaaadakidellarggnidaiadlaeayplsvfpdamglkqegrenllpy aglvfnafgppnelrqsaiersaphqayvaeqcqrpnlapggfgacihafsdtgeitpee apllvrsllsagldttvngiaaavyclarfpdefarlradpslarnafeeavrfespvqt ffrtttrdvelagatigegekvlmflgsanrdprrwddpdryditrktsghvgfgsgvhm cvgqlvarlegevvlaalarkvaaieiagplkrrfnntlrgleslpiqltpa
>2fr7A (A:) hgagvphlgidpfaldyfadpypeqetlreagpvvyldkwnvygvaryaevyavlndplt fcssrgvglsdfkkekpwrppslileadppahtrtravlskvlspatmkrlrdgfaaaad akidellarggnidaiadlaeayplsvfpdamglkqegrenllpyaglvfnafgppnelr qsaiersaphqayvaeqcqrpnlapggfgacihafsdtgeitpeeapllvrsllsagldt tvngiaaavyclarfpdefarlradpslarnafeeavrfespvqtffrtttrdvelagat igegekvlmflgsanrdprrwddpdryditrktsghvgfgsgvhmcvgqlvarlegevvl aalarkvaaieiagplkrrfnntlrgleslpiqltpa