>4xqoB (B:) observed residues (from ATOM records)
lfgaiagflengwegmvdgwygfrhqnaqgtgqaadykstqaaidqitgklnrlvtntef
esiesefseiehqignvinwtkdsitdiwtyqaellvamenqhtidmadsemlnlyervr
kqlrqnaeedgkgcfeiyhacddscmesirnntydhsqyreeallnrln