Chains and heterogens:
PDB Chain Sequences:
>3srkA (A:) msqlahnltlsifdpvanyraariictigpstqsvealkgliqsgmsvarmnfshgshey hqttinnvrqaaaelgvniaialdtkgpeirtgqfvggdavmergatcyvttdpafadkg tkdkfyidyqnlskvvrpgnyiyiddgililqvqshedeqtlectvtnshtisdrrgvnl pgcdvdlpavsakdrvdlqfgveqgvdmifasfirsaeqvgdvrkalgpkgrdimiicki enhqgvqnidsiieesdgimvargdlgveipaekvvvaqkiliskcnvagkpvicatqml esmtynprptraevsdvanavfngadcvmlsgetakgkypnevvqymaricleaqsalne yvffnsikklqhipmsadeavcssavnsvyetkakamvvlsntgrsarlvakyrpncpiv cvttrlqtcrqlnitqgvesvffdadklghdegkehrvaagvefakskgyvqtgdycvvi hadhkvkgyanqtrillve
>3srkA (A:) msqlahnltlsifdpvanyraariictigpstqsvealkgliqsgmsvarmnfshgshey hqttinnvrqaaaelgvniaialdtkgpeirtgqfvggdavmergatcyvttdpafadkg tkdkfyidyqnlskvvrpgnyiyiddgililqvqshedeqtlectvtnshtisdrrgvnl pgcdvdlpavsakdrvdlqfgveqgvdmifasfirsaeqvgdvrkalgpkgrdimiicki enhqgvqnidsiieesdgimvargdlgveipaekvvvaqkiliskcnvagkpvicatqml esmtynprptraevsdvanavfngadcvmlsgetakgkypnevvqymaricleaqsalne yvffnsikklqhipmsadeavcssavnsvyetkakamvvlsntgrsarlvakyrpncpiv cvttrlqtcrqlnitqgvesvffdadklghdegkehrvaagvefakskgyvqtgdycvvi hayanqtrillve
>3srkB (B:) msqlahnltlsifdpvanyraariictigpstqsvealkgliqsgmsvarmnfshgshey hqttinnvrqaaaelgvniaialdtkgpeirtgqfvggdavmergatcyvttdpafadkg tkdkfyidyqnlskvvrpgnyiyiddgililqvqshedeqtlectvtnshtisdrrgvnl pgcdvdlpavsakdrvdlqfgveqgvdmifasfirsaeqvgdvrkalgpkgrdimiicki enhqgvqnidsiieesdgimvargdlgveipaekvvvaqkiliskcnvagkpvicatqml esmtynprptraevsdvanavfngadcvmlsgetakgkypnevvqymaricleaqsalne yvffnsikklqhipmsadeavcssavnsvyetkakamvvlsntgrsarlvakyrpncpiv cvttrlqtcrqlnitqgvesvffdadklghdegkehrvaagvefakskgyvqtgdycvvi hadhkvkgyanqtrillve
>3srkB (B:) msqlahnltlsifdpvanyraariictigpstqsvealkgliqsgmsvarmnfshgshey hqttinnvrqaaaelgvniaialdtkgpevnlpgcdvdlpavsakdrvdlqfgveqgvdm ifasfirsaeqvgdvrkalgpkgrdimiickienhqgvqnidsiieesdgimvargdlgv eipaekvvvaqkiliskcnvagkpvicatqmlesmtynprptraevsdvanavfngadcv mlsgetakgkypnevvqymaricleaqsalneyvffnsikklqhipmsadeavcssavns vyetkakamvvlsntgrsarlvakyrpncpivcvttrlqtcrqlnitqgvesvffdadkl ghdegkehrvaagvefakskgyvqtgdycvvihayanqtrillve