Chains and heterogens:
PDB Chain Sequences:
>1sig_ (-) gshmegeidiakriedginqvqcsvaeypeaitylleqynrveaeearlsdlitgfvdpn aeedlaptathvgselsqedldddededeedgdddsadddnsidpelarekfaelraqyv vtrdtikakgrshataqeeilklsevfkqfrlvpkqfdylvnsmrvmmdrvrtqerlimk lcveqckmpkknfitlftgnetsdtwfnaaiamnkpwseklhdvseevhralqklqqiee etgltieqvkdinrrmsigeakarrakkemveanlrlvisiakkytnrglqfldliqegn iglmkavdkfeyrrgykfstyatwwirqaitrsiadqar
>1sig_ (-) megeidiakriedginqvqcsvaeypeaitylleqynrveaeearlsdlitgfvddlapt athvgselsqedldidpelarekfaelraqyvvtrdtikahataqeeilklsevfkqfrl vpkqfdylvnsmrvmmdrvrtqerlimklcveqckmpkknfitlftgnetsdtwfnaaia mnkpwseklhdvseevhralqklqqieeetgltieqvkdinrrmsigeakarrakkemve anlrlvisiakkytnrglqfldliqegniglmkavdkfeyrrgykfstyatwwirqaitr siadq