Chains and heterogens:
PDB Chain Sequences:
>1ykrA (A:) menfqkvekigegtygvvykarnkltgevvalkkirldtetegvpstaireisllkelnh pnivklldvihtenklylvfeflhqdlkkfmdasaltgiplpliksylfqllqglafchs hrvlhrdlkpqnllintegaikladfglarafgvpvrtythevvtlwyrapeillgckyy stavdiwslgcifaemvtrralfpgdseidqlfrifrtlgtpdevvwpgvtsmpdykpsf pkwarqdfskvvppldedgrsllsqmlhydpnkrisakaalahpffqdvtkpvphlrl