Chains and heterogens:
PDB Chain Sequences:
>1bcw_ (-) alrgtvtdfsgfdgradaevlrkamkglgtdedsilnlltarsnaqrqqiaeefktlfgr dlvndmkselagkfeklivalmkpsrlydayelkhalkgagtdekvlteiiasrtpeelr aikqayeeeygsnleddvvgdtsgyyqrmlvvllqanrdpdtaiddaqveldaqalfqag elkwgtdeekfitilgtrsvshlrrvfdkymtisgfqieetidretsgnlenlllavvks irsipaylaetlyyamkgagtddhtlirvivsrseidlfnirkefrknfatslysmikgd tsgdykkallllcggedd