Chains and heterogens:
PDB Chain Sequences:
>1bc3_ (-) alrgtvtdfsgfdgradaevlrkamkglgtdedsilnlltarsnaqrqqiaeefktlfgr dlvndmkselkgkfeklivalmkpsrlydayelkhalkgagtdekvlteiiasrtpeelr aikqayeeeygsnleddvvgdtkgyyqrmlvvllqanrdpdtaiddaqveldaqalfqag elkwgtdeekfitilgtrsvshlrrvfdkymtisgfqieetidretkgnlenlllavvks irsipaylaetlyyamkgagtddhtlirvivsrseidlfnirkefrknfatslysmikgd tsgdykkallllcggedd