Chains and heterogens:
PDB Chain Sequences:
>1bix_ (-) kndkeaagegpalyedppdqktspsgkpatlkicswnvdglrawikkkgldwvkeeapdi lclqetkcsenklpaelqelpglshqywsapsdkegysgvgllsrqcplkvsygigdeeh dqegrvivaefdsfvlvtayvpnagrglvrleyrqrwdeafrkflkglasrkplvlcgdl nvaheeidlrnpkgnkknagftpqerqgfgellqavpladsfrhlypntpyaytfwtymm narsknvgwrldyfllshsllpalcdskirskalgsdhcpitlylal
>1bix_ (-) lyedppdqktspsgkpatlkicswnvdglrawikkkgldwvkeeapdilclqetkcsenk lpaelqelpglshqywsapsdkegysgvgllsrqcplkvsygigdeehdqegrvivaefd sfvlvtayvpnagrglvrleyrqrwdeafrkflkglasrkplvlcgdlnvaheeidlrnp kgnkknagftpqerqgfgellqavpladsfrhlypntpyaytfwtymmnarsknvgwrld yfllshsllpalcdskirskalgsdhcpitlylal