>4pc3A (A:) observed residues (from ATOM records)
tkphvnvgtighvdhgkttltaaittvlaktyggshveydtptrhyahvdcpghadyvkn
mitgaaqmdgailvvaatdgpmpqtrehillgrqvgvpyiivflnkcdmvddeellelve
mevrellsqydfpgddtpivrgsalkalegdaeweakilelagfldsyipeperaidkpf
llpiedvfsisgrgtvvtgrvergiikvgeeveivgiketqkstctgvemfrklldegra
genvgvllrgikreeiergqvlakpgtikphtkfesevyilskdeggrhtpffkgyrpqf
yfrttdvtgtielpegvemvmpgdnikmvvtlihpiamddglrfaireggrtvgagvvak
vlg