Chains and heterogens:
PDB Chain Sequences:
>1xk6A (A:) gshmdhlpmpkfgplaglrvvfsgieiagpfagqmfaewgaeviwienvawadtirvqpn ypqlsrrnlhalslnifkdegreaflklmettdifieaskgpafarrgitdevlwqhnpk lviahlsgfgqygteeytnlpayntiaqafsgyliqngdvdqpmpafpytadyfsgltat taalaalhkvretgkgesidiamyevmlrmgqyfmmdyfnggemcprmskgkdpyyagcg lykcadgyivmelvgitqieecfkdiglahllgtpeipegtqlihriecpygplveekld awlathtiaevkerfaelniacakvltvpelesnpqyvaresitqwqtmdgrtckgpnim pkfknnpgqiwrgmpshgmdtaailknigysendiqelvskglakved
>1xk6A (A:) lpmpkfgplaglrvvfsgieiagpfagqmfaewgaeviwienvawadtirvqpnypqlsr rnlhalslnifkdegreaflklmettdifieaskgpafarrgitdevlwqhnpklviahl sgfgqygteeytnlpayntiaqafsgyliqngdvdqpmpafpytadyfsgltattaalaa lhkvretgkgesidiamyevmlrmgqyfmmdyfnggemcprmskgkdpyyagcglykcad gyivmelvgitqieecfkdiglahllgtpeipegtqlihriecpygplveekldawlath tiaevkerfaelniacakvltvpelesnpqyvaresitqwqtmdgrtckgpnimpkfknn pgqiwrgmpshgmdtaailknigysendiqelvskglakved
>1xk6B (B:) gshmdhlpmpkfgplaglrvvfsgieiagpfagqmfaewgaeviwienvawadtirvqpn ypqlsrrnlhalslnifkdegreaflklmettdifieaskgpafarrgitdevlwqhnpk lviahlsgfgqygteeytnlpayntiaqafsgyliqngdvdqpmpafpytadyfsgltat taalaalhkvretgkgesidiamyevmlrmgqyfmmdyfnggemcprmskgkdpyyagcg lykcadgyivmelvgitqieecfkdiglahllgtpeipegtqlihriecpygplveekld awlathtiaevkerfaelniacakvltvpelesnpqyvaresitqwqtmdgrtckgpnim pkfknnpgqiwrgmpshgmdtaailknigysendiqelvskglakved
>1xk6B (B:) lpmpkfgplaglrvvfsgieiagpfagqmfaewgaeviwienvawadtirvqpnypqlsr rnlhalslnifkdegreaflklmettdifieaskgpafarrgitdevlwqhnpklviahl sgfgqygteeytnlpayntiaqafsgyliqngdvdqpmpafpytadyfsgltattaalaa lhkvretgkgesidiamyevmlrmgqyfmmdyfnggemcprmskgkdpyyagcglykcad gyivmelvgitqieecfkdiglahllgtpeipegtqlihriecpygplveekldawlath tiaevkerfaelniacakvltvpelesnpqyvaresitqwqtmdgrtckgpnimpkfknn pgqiwrgmpshgmdtaailknigysendiqelvskglakved
>1xk6C (C:) gshmdhlpmpkfgplaglrvvfsgieiagpfagqmfaewgaeviwienvawadtirvqpn ypqlsrrnlhalslnifkdegreaflklmettdifieaskgpafarrgitdevlwqhnpk lviahlsgfgqygteeytnlpayntiaqafsgyliqngdvdqpmpafpytadyfsgltat taalaalhkvretgkgesidiamyevmlrmgqyfmmdyfnggemcprmskgkdpyyagcg lykcadgyivmelvgitqieecfkdiglahllgtpeipegtqlihriecpygplveekld awlathtiaevkerfaelniacakvltvpelesnpqyvaresitqwqtmdgrtckgpnim pkfknnpgqiwrgmpshgmdtaailknigysendiqelvskglakved
>1xk6C (C:) lpmpkfgplaglrvvfsgieiagpfagqmfaewgaeviwienvawadtirvqpnypqlsr rnlhalslnifkdegreaflklmettdifieaskgpafarrgitdevlwqhnpklviahl sgfgqygteeytnlpayntiaqafsgyliqngdvdqpmpafpytadyfsgltattaalaa lhkvretgkgesidiamyevmlrmgqyfmmdyfnggemcprmskgkdpyyagcglykcad gyivmelvgitqieecfkdiglahllgtpeipegtqlihriecpygplveekldawlath tiaevkerfaelniacakvltvpelesnpqyvaresitqwqtmdgrtckgpnimpkfknn pgqiwrgmpshgmdtaailknigysendiqelvskglakved
>1xk6D (D:) gshmdhlpmpkfgplaglrvvfsgieiagpfagqmfaewgaeviwienvawadtirvqpn ypqlsrrnlhalslnifkdegreaflklmettdifieaskgpafarrgitdevlwqhnpk lviahlsgfgqygteeytnlpayntiaqafsgyliqngdvdqpmpafpytadyfsgltat taalaalhkvretgkgesidiamyevmlrmgqyfmmdyfnggemcprmskgkdpyyagcg lykcadgyivmelvgitqieecfkdiglahllgtpeipegtqlihriecpygplveekld awlathtiaevkerfaelniacakvltvpelesnpqyvaresitqwqtmdgrtckgpnim pkfknnpgqiwrgmpshgmdtaailknigysendiqelvskglakved
>1xk6D (D:) lpmpkfgplaglrvvfsgieiagpfagqmfaewgaeviwienvawadtirvqpnypqlsr rnlhalslnifkdegreaflklmettdifieaskgpafarrgitdevlwqhnpklviahl sgfgqygteeytnlpayntiaqafsgyliqngdvdqpmpafpytadyfsgltattaalaa lhkvretgkgesidiamyevmlrmgqyfmmdyfnggemcprmskgkdpyyagcglykcad gyivmelvgitqieecfkdiglahllgtpeipegtqlihriecpygplveekldawlath tiaevkerfaelniacakvltvpelesnpqyvaresitqwqtmdgrtckgpnimpkfknn pgqiwrgmpshgmdtaailknigysendiqelvskglakved