Chains and heterogens:
PDB Chain Sequences:
>4l4dA (A:) mttetiqsnanlaplpphvpehlvfdfdmynpsnlsagvqeawavlqesnvpdlvwtrcn gghwiatrgqlireayedyrhfssecpfipreageaydfiptsmdppeqrqfralanqvv gmpvvdklenriqelacslieslrpqgqcnftedyaepfpirifmllaglpeediphlky ltdqmtrpdgsmtfaeakealydylipiieqrrqkpgtdaisivangqvngrpitsdeak rmcglllvggldtvvnflsfsmeflakspehrqelierperipaaceellrrfslvadgr iltsdyefhgvqlkkgdqillpqmlsglderenaapmhvdfsrqkvshttfghgshlcag qhlarreiivtlkewltripdfsiapgaqiqhksgivsgvqalplvwdpattkav
>4l4dA (A:) nlaplpphvpehlvfdfdmynpsnlsagvqeawavlqesnvpdlvwtrcngghwiatrgq lireayedyrhfssecpfipreageaydfiptsmdppeqrqfralanqvvgmpvvdklen riqelacslieslrpqgqcnftedyaepfpirifmllaglpeediphlkyltdqmtrpdg smtfaeakealydylipiieqrrqkpgtdaisivangqvngrpitsdeakrmcglllvgg ldtvvnflsfsmeflakspehrqelierperipaaceellrrfslvadgriltsdyefhg vqlkkgdqillpqmlsglderenaapmhvdfsrqkvshttfghgshlcagqhlarreiiv tlkewltripdfsiapgaqiqhksgivsgvqalplvwdpattkav