Chains and heterogens:
PDB Chain Sequences:
>2fx3A (A:) skekfertkphvnvgtighvdhgkttltaaittvlaktyggaarafdqidnapeekargi tintshveydtptrhyahvdcpghadyvknmitgaaqmdgailvvaatdgpmpqtrehil lgrqvgvpyiivflnkcdmvddeellelvemevrellsqydfpgddtpivrgsalkaleg daeweakilelagfldsyipeperaidkpfllpiedvfsisgrgtvvtgrvergiikvge eveivgiketqkstctgvemfrklldegragenvgvllrgikreeiergqvlakpgtikp htkfesevyilskdeggrhtpffkgyrpqfyfrttdvtgtielpegvemvmpgdnikmvv tlihpiamddglrfaireggrtvgagvvakvlg
>2fx3A (A:) rtkphvnvgtighvdhgkttltaaittvlaktyggaarafdqidnapeekargitintsh veydtptrhyahvdcpghadyvknmitgaaqmdgailvvaatdgpmpqtrehillgrqvg vpyiivflnkcdmvddeellelvemevrellsqydfpgddtpivrgsalkalegdaewea kilelagfldsyipeperaidkpfllpiedvfsisgrgtvvtgrvergiikvgeeveivg iketqkstctgvemfrklldegragenvgvllrgikreeiergqvlakpgtikphtkfes evyilskdeggrhtpffkgyrpqfyfrttdvtgtielpegvemvmpgdnikmvvtlihpi amddglrfaireggrtvgagvvakvlg