Chains and heterogens:
PDB Chain Sequences:
>1rz4A (A:) mamfeqmranvgkllkgidrynpenlatleryvetqakenaydleanlavlklyqfnpaf fqttvtaqillkaltnlphtdftlckcmidqahqeerpirqilylgdlletchfqafwqa ldenmdllegitgfedsvrkfichvvgityqhidrwllaemlgdlsdsqlkvwmskygws adesgqificsqeesikpknivekidfdsvssimassqlehhhhhh
>1rz4A (A:) amfeqmranvgkllkgidrynpenlatleryvetqakenaydleanlavlklyqfnpaff qttvtaqillkaltnlphtdftlckcmidqahqeerpirqilylgdlletchfqafwqal denmdllegitgfedsvrkfichvvgityqhidrwllaemlgdlsdsqlkvwmskygwsa deqificsqeesikpknivekidfdsvssimas