Chains and heterogens:
PDB Chain Sequences:
>5mrkA (A:) sgggtgetlgekwkarlnqmsalefysykksgitevcreearralkdgvatgghavsrgs aklrwlvergylqpygkvidlgcgrggwsyyaatirkvqevkgytkggpgheepmlvqsy gwnivrlksgvdvfhmaaepcdtllcdigesssspeveeartlrvlsmvgdwlekrpgaf cikvlcpytstmmetlerlqrryggglvrvplsrnsthemywvsgaksntiksvsttsql llgrmdgprrpvkyeedvnlgsgtr
>5mrkA (A:) getlgekwkarlnqmsalefysykksgitevcreearralkdgvatgghavsrgsaklrw lvergylqpygkvidlgcgrggwsyyaatirkvqevkgytkggpgheepmlvqsygwniv rlksgvdvfhmaaepcdtllcdigesssspeveeartlrvlsmvgdwlekrpgafcikvl cpytstmmetlerlqrryggglvrvplsrnsthemywvsgaksntiksvsttsqlllgrm dgprrpvkyeedvnlgsgtr
>5mrkB (B:) sgggtgetlgekwkarlnqmsalefysykksgitevcreearralkdgvatgghavsrgs aklrwlvergylqpygkvidlgcgrggwsyyaatirkvqevkgytkggpgheepmlvqsy gwnivrlksgvdvfhmaaepcdtllcdigesssspeveeartlrvlsmvgdwlekrpgaf cikvlcpytstmmetlerlqrryggglvrvplsrnsthemywvsgaksntiksvsttsql llgrmdgprrpvkyeedvnlgsgtr
>5mrkB (B:) getlgekwkarlnqmsalefysykksgitevcrhavsrgsaklrwlvergylqpygkvid lgcgrggwsyyaatirkvqevkgytkggpgheepmlvqsygwnivrlksgvdvfhmaaep cdtllcdigesssspeveeartlrvlsmvgdwlekrpgafcikvlcpytstmmetlerlq rryggglvrvplsrnsthemywvsgaksntiksvsttsqlllgrmdgprrpvkyeedvnl gsgtr