Chains and heterogens:
PDB Chain Sequences:
>4pksA (A:) snalsryekwekikqhyqhwsdslseegrgllkklqipiepkkddiihslsqeekellkr iqidssdflsteekeflkklqidirdslseeekellnriqvdssnplsekekeflkklkl diqpydinqrlqdtgglidspsinldvrkqykrdiqnidallhqsigstlynkiylyenm ninnltatlgadlvdstdntkinrgifnefkknfkysissnymivdinerpaldnerlkw riqlspdtragylengklilqrnigleikdvqiikqsekeyiridakvvpkskidtkiqe aqlninqewnkalglpkytklitfnvhnryasnivesaylilnewknniqsdlikkvtny lvdgngrfvftditlpniaeqythqdeiyeqvhskglyvpesrsillhgpskgvelrnds egfihefghavddyagylldknqsdlvtnskkfidifkeegsnltsygrtneaeffaeaf rlmhstdhaerlkvqknapktfqfindqikfiinslvpr
>4pksA (A:) ryekwekikqhyqhwsdslseegrgllkklqipiepkkddiihslsqeekellkriqids sdflsteekeflkklqidiekekeflkklkldiqpydinqrlqdtgglidspsinldvrk qykrdiqnidallhqsigstlynkiylyenmninnltatlgadlvdstdntkinrgifne fkknfkysissnymivdinerpaldnerlkwriqlspdtragylengklilqrnigleik dvqiikqsekeyiridakvvpkskidtkiqeaqlninqewnkalglpkytklitfnvhnr yasnivesaylilnewknniqsdlikkvtnylvdgngrfvftditlpniaeqythqdeiy eqvhskglyvpesrsillhgpskgvelrndsegfihefghavddyagylldknqsdlvtn skkfidifkeegsnltsygrtneaeffaeafrlmhstdhaerlkvqknapktfqfindqi kfiins