Chains and heterogens:
PDB Chain Sequences:
>1e2eA (A:) rrgalivlegvdragkstqsrklvealcaaghraellrfpersteigkllssylqkksdv edhsvhllfsanrweqvplikeklsqgvtlvvdryafsgvaftgakenfsldwckqpdvg lpkpdlvlflqlqladaakrgafgheryengafqeralrcfhqlmkdttlnwkmvdasks ieavhedirvlsedaiatatekplgelwk