Chains and heterogens:
PDB Chain Sequences:
>1oa4A (A:) nqqicdrygtttiqdryvvqnnrwgtsatqcinvtgngfeitqadgsvptngapksypsv ydgchygncaprttlpmrissigsapssvsyrytgngvynaaydiwldptprtngvnrte imiwfnrvgpvqpigspvgtahvggrswevwtgsngsndvisflapsaisswsfdvkdfv dqavshglatpdwyltsiqagfepweggtglavnsfssavna