Chains and heterogens:
PDB Chain Sequences:
>4xm7A (A:) snalsryekwekikqhyqhwsdslseegrgllkklqipiepkkddiihslsqeekellkr iqidssdflsteekeflkklqidirdslseeekellnriqvdssnplsekekeflkklkl diqpydinqrlqdtgglidspsinldvrkqykrdiqnidallhqsigstlynkiylyenm ninnltatlgadlvdstdntkinrgifnefkknfkysissnymivdinerpaldnerlkw riqlspdtragylengklilqrnigleikdvqiikqsekeyiridakvvpkskidtkiqe aqlninqewnkalglpkytklitfnvhnryasnivesaylilnewknniqsdlikkvtny lvdgngrfvftditlpniaeqythqdeiyeqvhskglyvpesrsillhgpskgvelrnds egfihefghavddyagylldknqsdlvtnskkfidifkeegsnltsygrtneaeffaeaf rlmhstdhaerlkvqknapktfqfindqikfiinslvpr
>4xm7A (A:) lsryekwekikqhyqhwsdslseegrgllkklqipiepkkddiihslsqeekellkriqi dssdflsteekeflkklqidirdeeekellnriqvdssnplsekekeflkklkldiqpyd inqrlqdtgglidspsinldvrkqykrdiqnidallhqsigstlynkiylyenmninnlt atlgadlvdstdntkinrgifnefkknfkysissnymivdinerpaldnerlkwriqlsp dtragylengklilqrnigleikdvqiikqsekeyiridakvvpkskidtkiqeaqlnin qewnkalglpkytklitfnvhnryasnivesaylilnewknniqsdlikkvtnylvdgng rfvftditlpniaeqythqdeiyeqvhskglyvpesrsillhgpskgvelrndsegfihe fghavddyagylldknqsdlvtnskkfidifkeegsnltsygrtneaeffaeafrlmhst dhaerlkvqknapktfqfindqikfiinsl