Chains and heterogens:
PDB Chain Sequences:
>3iu1A (A:) grsyqfwdtqpvpklgevvnthgpvepdkdnirqepytlpqgftwdaldlgdrgvlkely tllnenyvedddnmfrfdyspefllwalrppgwlpqwhcgvrvvssrklvgfisaipani hiydtekkmveinflcvhkklrskrvapvlireitrrvhlegifqavytagvvlpkpvgt crywhrslnprklievkfshlsrnmtmqrtmklyrlpetpktaglrpmetkdipvvhqll trylkqfhltpvmsqeevehwfypqeniidtfvvenangevtdflsfytlpstimnhpth kslkaaysfynvhtqtplldlmsdalvlakmkgfdvfnaldlmenktfleklkfgigdgn lqyylynwkcpsmgaekvglvlq
>3iu1A (A:) rsyqfwdtqpvpklgevvnthgpvepdkdnirqepytlpqgftwdaldlgdrgvlkelyt llnenyvedddnmfrfdyspefllwalrppgwlpqwhcgvrvvssrklvgfisaipanih iydtekkmveinflcvhkklrskrvapvlireitrrvhlegifqavytagvvlpkpvgtc rywhrslnprklievkfshlnmtmqrtmklyrlpetpktaglrpmetkdipvvhqlltry lkqfhltpvmsqeevehwfypqeniidtfvvenangevtdflsfytlpstimnhpthksl kaaysfynvhtqtplldlmsdalvlakmkgfdvfnaldlmenktfleklkfgigdgnlqy ylynwkcpsmgaekvglvlq
>3iu1B (B:) grsyqfwdtqpvpklgevvnthgpvepdkdnirqepytlpqgftwdaldlgdrgvlkely tllnenyvedddnmfrfdyspefllwalrppgwlpqwhcgvrvvssrklvgfisaipani hiydtekkmveinflcvhkklrskrvapvlireitrrvhlegifqavytagvvlpkpvgt crywhrslnprklievkfshlsrnmtmqrtmklyrlpetpktaglrpmetkdipvvhqll trylkqfhltpvmsqeevehwfypqeniidtfvvenangevtdflsfytlpstimnhpth kslkaaysfynvhtqtplldlmsdalvlakmkgfdvfnaldlmenktfleklkfgigdgn lqyylynwkcpsmgaekvglvlq
>3iu1B (B:) rsyqfwdtqpvpklgevvnthgpvepdkdnirqepytlpqgftwdaldlgdrgvlkelyt llnenyvedddnmfrfdyspefllwalrppgwlpqwhcgvrvvssrklvgfisaipanih iydtekkmveinflcvhkklrskrvapvlireitrrvhlegifqavytagvvlpkpvgtc rywhrslnprklievkfshlsrnmtmqrtmklyrlpetpktaglrpmetkdipvvhqllt rylkqfhltpvmsqeevehwfypqeniidtfvvenangevtdflsfytlpstimnhpthk slkaaysfynvhtqtplldlmsdalvlakmkgfdvfnaldlmenktfleklkfgigdgnl qyylynwkcpsmgaekvglvlq