Chains and heterogens:
PDB Chain Sequences:
>4xrjA (A:) pemvrgqvfdvgprytnlsyigegaygmvcsaydnlnkvrvaikkispfehqtycqrtlr eikillrfrheniigindiiraptieqmkdvyivqdlmetdlykllktqhlsndhicyfl yqilrglkyihsanvlhrdlkpsnlllnttcdlkicdfglarvadpdhdhtgflteyvat rwyrapeimlnskgytksidiwsvgcilaemlsnrpifpgkhyldqlnhilgilgspsqe dlnciinlkarnyllslphknkvpwnrlfpnadskaldlldkmltfnphkrieveqalah pyleqyydpsdepiaeapfkfdmelddlpkeklkelifeetarfqp