Chains and heterogens:
PDB Chain Sequences:
>1b63A (A:) shmpiqvlppqlanqiaagevverpasvvkelvensldagatrididierggaklirird ngcgikkdelalalarhatskiaslddleaiislgfrgealasissvsrltltsrtaeqq eawqayaegrdmnvtvkpaahpvgttlevldlfyntparrkflrtektefnhideiirri alarfdvtinlshngkivrqyravpeggqkerrlgaicgtafleqalaiewqhgdltlrg wvadpnhttpalaeiqycyvngrmmrdrlinhairqacedklgadqqpafvlyleidphq vdvnvhpakhevrfhqsrlvhdfiyqgvlsvlq