Chains and heterogens:
PDB Chain Sequences:
>1bif_ (-) cptlivmvglpargktyiskkltrylnfigvptrefnvgqyrrdmvktyksfefflpdne eglkirkqcalaalndvrkflseegghvavfdatnttrerramifnfgeqngyktffves icvdpeviaanivqvklgspdyvnrdsdeatedfmrriecyensyesldeeqdrdlsyik imdvgqsyvvnrvadhiqsrivyylmnihvtprsiylcrhgeselnlkgriggdpglspr grefskhlaqfisdqnikdlkvftsqmkrtiqtaealsvpyeqfkvlneidagvceemty eeiqdhyplefalrdqdkyryrypkgesyedlvqrlepvimelerqenvlvichqavmrc llayfldkaaeelpylkcplhtvlkltpvaygckvesiflnvaavnthrdrpqnvdisrp seealvtvpahq