>1br1B (B:) observed residues (from ATOM records) fseeqtaefkeafqlfdrtgdgkilysqcgdvmralgqnptnaevmkvlgnpksdemnlk tlkfeqflpmmqtiaknkdqgcfedyveglrvfdkegngtvmgaeirhvlvtlgekmtee eveqlvaghedsngcinyeelvrmvlsg