Chains and heterogens:
PDB Chain Sequences:
>1xrvA (A:) yklicyytswsqyregdgscfpdaidpflcthviysfanisnneidtwewndvtlydtln tlknrnpnlktllsvggwnfgpqrfskiasktqsrrtfiksvppflrthgfdgldlawly pgrrdkrhlttlvkemkaefireaqagteqlllsaavsagkiaidrgydiaqisrhldfi slltydfhgawrqtvghhsplfrgqedassrfsnadyavsymlrlgapanklvmgiptfg ksftlassktdvgapvsgpgipgqftkekgilayyeicdflqgatthrfrdqqvpyatkg nqwvayddqesvknkarylknrqlagamvwaldlddfrgtfcgqnltfpltsavkdvlar a