Chains and heterogens:
PDB Chain Sequences:
>1fssA (A:) ddhsellvntksgkvmgtrvpvlsshisaflgipfaeppvgnmrfrrpepkkpwsgvwna stypnncqqyvdeqfpgfsgsemwnpnremsedclylniwvpsprpksttvmvwiygggf ysgsstldvyngkylayteevvlvslsyrvgafgflalhgsqeapgnvglldqrmalqwv hdniqffggdpktvtifgesaggasvgmhilspgsrdlfrrailqsgspncpwasvsvae grrravelgrnlncnlnsdeelihclrekkpqelidvewnvlpfdsifrfsfvpvidgef fptslesmlnsgnfkktqillgvnkdegsffllygapgfskdseskisredfmsgvklsv phandlgldavtlqytdwmddnngiknrdglddivgdhnvicplmhfvnkytkfgngtyl yffnhrasnlvwpewmgvihgyeiefvfglplvkelnytaeeealsrrimhywatfaktg npnephsqeskwplfttkeqkfidlntepmkvhqrlrvqmcvfwnqflpkllnatac
>1fssA (A:) sellvntksgkvmgtrvpvlsshisaflgipfaeppvgnmrfrrpepkkpwsgvwnasty pnncqqyvdeqfpgfsgsemwnpnremsedclylniwvpsprpksttvmvwiygggfysg sstldvyngkylayteevvlvslsyrvgafgflalhgsqeapgnvglldqrmalqwvhdn iqffggdpktvtifgesaggasvgmhilspgsrdlfrrailqsgspncpwasvsvaegrr ravelgrnlncnlnsdeelihclrekkpqelidvewnvlpfdsifrfsfvpvidgeffpt slesmlnsgnfkktqillgvnkdegsffllygapgfskdseskisredfmsgvklsvpha ndlgldavtlqytdwmddnngiknrdglddivgdhnvicplmhfvnkytkfgngtylyff nhrasnlvwpewmgvihgyeiefvfglplvkelnytaeeealsrrimhywatfaktgnpn ephsqeskwplfttkeqkfidlntepmkvhqrlrvqmcvfwnqflpkllnat
>1fssB (B:) tmcyshtttsrailtncgenscyrksrrhppkmvlgrgcgcppgddnlevkcctspdkcn y