Chains and heterogens:
PDB Chain Sequences:
>1sgt_ (-) vvggtraaqgefpfmvrlsmgcggalyaqdivltaahcvsgsgnntsitatggvvdlqsg aavkvrstkvlqapgyngtgkdwaliklaqpinqptlkiatttaynqgtftvagwganre ggsqqryllkanvpfvsdaacrsaygnelvaneeicagypdtggvdtcqgdsggpmfrkd nadewiqvgivswgygcarpgypgvytevstfasaiasaartl