Chains and heterogens:
PDB Chain Sequences:
>1pkfA (A:) mtqeqanqsetkpafdfkpfapgyaedpfpaierlreatpifywdegrswvltryhdvsa vfrderfavsreewessaeyssaipelsdmkkyglfglppedharvrklvnpsftsraid llraeiqrtvdqlldarsgqeefdvvrdyaegipmraisallkvpaecdekfrrfgsata ralgvglvprvdeetktlvasvteglallhgvlderrrnplendvltmllqaeadgsrls tkelvalvgaiiaagtdttiyliafavlnllrspealelvkaepglmrnaldevlrfeni lrigtvrfarqdleycgasikkgemvfllipsalrdgtvfsrpdvfdvrrdtsaslaygr gphvcpgvslarleaeiavgtifrrfpemklketpvfgyhpafrnieslnvilkpskag
>1pkfA (A:) afdfkpfapgyaedpfpaierlreatpifywdegrswvltryhdvsavfrderfavsree wessaeyssaipelsdmkkyglfglppedharvrklvnpsftsraidllraeiqrtvdql ldarsgqeefdvvrdyaegipmraisallkvpaecdekfrrfgsataralgvglvprvde etktlvasvteglallhgvlderrrnplendvltmllqaeadgsrlstkelvalvgaiia agtdttiyliafavlnllrspealelvkaepglmrnaldevlrfenilrigtvrfarqdl eycgasikkgemvfllipsalrdgtvfsrpdvfdvrrdtsaslaygrgphvcpgvslarl eaeiavgtifrrfpemklketpvfgyhpafrnieslnvilkps