Chains and heterogens:
PDB Chain Sequences:
>1gukA (A:) pklyyfngrgrmesirwllaaagvefeeefletreqyekmqkdghllfgqvplveidgmm ltqtrailsylaakynlygkdlkervridmyadgtqdlmmmiavapfktpkekeesydli lsraktryfpvfekilkdhgeaflvgnqlswadiqlleailmveelsapvlsdfpllqaf ktrisniptikkflqpgsqrkpppdgpyvevvriv
>1gukB (B:) pklyyfngrgrmesirwllaaagvefeeefletreqyekmqkdghllfgqvplveidgmm ltqtrailsylaakynlygkdlkervridmyadgtqdlmmmiavapfktpkekeesydli lsraktryfpvfekilkdhgeaflvgnqlswadiqlleailmveelsapvlsdfpllqaf ktrisniptikkflqpgsqrkpppdgpyvevvriv
>1gukB (B:) pklyyfngrgrmesirwllaaagvefeeefletreqyekmqkdghllfgqvplveidgmm ltqtrailsylaakynlygkdlkervridmyadgtqdlmmmiavapfktsydlilsrakt ryfpvfekilkdhgeaflvgnqlswadiqlleailmveelsapvlsdfpllqafktrisn iptikkflqpgsqrkpppdgpyvevvriv