Chains and heterogens:
PDB Chain Sequences:
>1k38A (A:) qegtlersdwrkffsefqakgtivvaderqadramlvfdpvrskkryspastfkiphtlf aldagavrdefqifrwdgvnrgfaghnqdqdlrsamrnstvwvyelfakeigddkarryl kkidygnadpstsngdywiegslaisaqeqiaflrklyrnelpfrvehqrlvkdlmivea grnwilraktgwegrmgwwvgwvewptgsvffalnidtpnrmddlfkreaivrailrsie alppnpavnsdaar
>1k38A (A:) tlersdwrkffsefqakgtivvaderqadramlvfdpvrskkryspastfkiphtlfald agavrdefqifrwdgvnrgfaghnqdqdlrsamrnstvwvyelfakeigddkarrylkki dygnadpstgdywiegslaisaqeqiaflrklyrnelpfrvehqrlvkdlmiveagrnwi lraktgwegrmgwwvgwvewptgsvffalnidtpnrmddlfkreaivrailrsiealpp
>1k38B (B:) qegtlersdwrkffsefqakgtivvaderqadramlvfdpvrskkryspastfkiphtlf aldagavrdefqifrwdgvnrgfaghnqdqdlrsamrnstvwvyelfakeigddkarryl kkidygnadpstsngdywiegslaisaqeqiaflrklyrnelpfrvehqrlvkdlmivea grnwilraktgwegrmgwwvgwvewptgsvffalnidtpnrmddlfkreaivrailrsie alppnpavnsdaar
>1k38B (B:) tlersdwrkffsefqakgtivvaderqadramlvfdpvrskkryspastfkiphtlfald agavrdefqifrwdgvnrghnqdqdlrsamrnstvwvyelfakeigddkarrylkkidyg nadpstdywiegslaisaqeqiaflrklyrnelpfrvehqrlvkdlmiveagrnwilrak tgwegrmgwwvgwvewptgsvffalnidtpnrmddlfkreaivrailrsiealpp