Chains and heterogens:
PDB Chain Sequences:
>2f13A (A:) gsmaslpvlqkesvfqsgahayripallylpgqqsllafaeqraskkdehaelivlrrgd ydapthqvqwqaqevvaqarldghrsmnpcplydaqtgtlflffiaipgqvteqqqlqtr anvtrlcqvtstdhgrtwssprdltdaaigpayrewstfavgpghclqlndrarslvvpa yayrklhpiqrpipsafcflshdhgrtwarghfvaqdtlecqvaevetgeqrvvtlnars hlrarvqaqstndgldfqesqlvkklvepppqgcqgsvisfpsprsgpgspaqwllythp thswqradlgaylnprppapeawsepvllakgscaysdlqsmgtgpdgsplfgclyeand yeeivflmftlkqafpaeylpq
>2f13A (A:) slpvlqkesvfqsgahayripallylpgqqsllafaeqraaelivlrrgdydapthqvqw qaqevvaqarldghrsmnpcplydaqtgtlflffiaipgqranvtrlcqvtstdhgrtws sprdltdaaigpayrewstfavgpghclqlndrarslvvpayayrklhpiqrpipsafcf lshdhgrtwarghfvaqdtlecqvaeveeqrvvtlnarshlrarvqaqstndgldfqesq lvkklvepppqgcqgsvisfpspraqwllythpthswqradlgaylnprppapeawsepv llakgscaysdlqsmgtgpdgsplfgclyeandyeeivflmftlkqafpae