>3sfeB (B:) observed residues (from ATOM records)
aprikkfaiyrwdpdktgdkphmqtyeidlnncgpmvldalikikneidstltfrrscre
gicgscamninggntlactrridtnldkvskiyplphmyvikdlvpdlsnfyaqyksiep
ylkkkdesqegkqqylqsieerekldglyecilcaccstscpsywwngdkylgpavlmqa
yrwmidsrddfteerlaklqdpfslyrchtimnctgtcpkglnpgkaiaeikkmmatyke