Chains and heterogens:
PDB Chain Sequences:
>1xixA (A:) pvlnlndpqaveryeefmrqspygqvtqdlgwakvknnwepvdvyleddqgaiiaamsml lgdtptdkkfayaskgpvmdvtdvdlldrlvdeavkaldgrayvlrfdpevaysdefntt lqdhgyvtrnrnvadagmhatiqprlnmvldltkfpdakttldlypsktkskikrpfrdg vevhsgnsateldeffktyttmaerhgithrpieyfqrmqaafdadtmrifvaeregkll stgialkygrkiwymyagsmdgntyyapyavqsemiqwaldtntdlydlggiesestdds lyvfkhvfvkdapreyigeidkvldpevyaelvkd