Chains and heterogens:
PDB Chain Sequences:
>1ubx_ (-) spvvverereefvgffpqivrdltedgighpevgdavarlkevlqynapggkcnrgltvv aayrelsgpgqkdaeslrcalavgwcielfqaaslvaddimdqsltrrgqlcwykkegvg ldaindsfllessvyrvlkkycrqrpyyvhllelflqtayqtelgqmldlitapvskvdl shfseerykaivkyktafysfylpvaaamymvgidskeehenakaillemgeyfqiqddy ldcfgdpaltgkvgtdiqdnkcswlvvqclqrvtpeqrqllednygrkepekvakvkely eavgmraafqqyeessyrrlqeliekhsnrlpkeiflglaqkiykrqk