Chains and heterogens:
PDB Chain Sequences:
>1mb8A (A:) shmaviriaderdrvqkktftkwvnkhlikhwraeaqrhisdlyedlrdghnlisllevl sgdslprekgrmrfhklqnvqialdylrhrqvklvnirnddiadgnpkltlgliwtiilh fqisdiqvsgqsedmtakeklllwsqrmvegyqglrcdnftsswrdgrlfnaiihrhkpl lidmnkvyrqtnlenldqafsvaerdlgvtrlldpedvdvpqpdeksiityvsslydamp rvp