Chains and heterogens:
PDB Chain Sequences:
>3bwtA (A:) srfadavldqyigsihslckdqhgcrflqkqldilgskaadaifeetkdytvelmtdsfg nyliqklleevtteqrivltkissphfveislnphgtralqklieciktdeeaqivvdsl rpytvqlskdlngnhviqkclqrlkpenfqfifdaisdscidiathrhgccvlqrcldhg tteqcdnlcdkllalvdkltldpfgnyvvqyiitkeaeknkydythkivhllkpraiels ihkfgsnviekilktaivsepmileilnnggetgiqsllndsygnyvlqtaldishkqnd ylykrlseivapllvgpirntphgkriigmlhl