Chains and heterogens:
PDB Chain Sequences:
>1iykA (A:) egpidklktpedvpndplplisdfewstldiddnlqldelykllydnyvedidatfrfky sheffqwalkppgwrkdwhvgvrvkstgklvafiaatpvtfklnksnkvidsveinflci hkklrnkrlapvlikeitrrvnkqniwqalytggsilptplttcryqhrpinwsklhdvg fshlppnqtkssmvasytlpnnpklkglrpmtgkdvstvlsllykyqerfdivqlfteee fkhwmlghdensdsnvvksyvvedengiitdyfsyyllpftvldnaqhdelgiaylfyya sdsfekpnykkrlnelitdalitskkfgvdvfncltcqdntyflkdckfgsgdgflnyyl fnyrtfpmdggidkktkevvedqtsgigvvll
>1iykB (B:) egpidklktpedvpndplplisdfewstldiddnlqldelykllydnyvedidatfrfky sheffqwalkppgwrkdwhvgvrvkstgklvafiaatpvtfklnksnkvidsveinflci hkklrnkrlapvlikeitrrvnkqniwqalytggsilptplttcryqhrpinwsklhdvg fshlppnqtkssmvasytlpnnpklkglrpmtgkdvstvlsllykyqerfdivqlfteee fkhwmlghdensdsnvvksyvvedengiitdyfsyyllpftvldnaqhdelgiaylfyya sdsfekpnykkrlnelitdalitskkfgvdvfncltcqdntyflkdckfgsgdgflnyyl fnyrtfpmdggidkktkevvedqtsgigvvll