>4ffxB (B:) observed residues (from ATOM records)
gspdsyrsplasryaspemcfvfsdrykfrtwrqlwlwlaeaeqtlglpitdeqiremks
nlenidfkmaaeeekrlrhdvmahvhtfghccaagiihlgatscyvgdntdliilrnald
lllpklarvisrladfakeraslptlgfthfqpaqlttvgkrcclwiqdlcmdlqnlkrv
rddlrfrgvkgttgtqasflqlfegddhkveqldkmvtekagfkrafiitgqtytrkvdi
evlsvlaslgasvhkictdirllanlkemeepfepykrnpmrserccslarhlmtlvmdp
lqtasvqwfertlddsanrriclaeafltadtilntlqniseglvvypkvierrirqelp
fmateniimamvkaggsrqdchekirvlsqqaasvvkqeggdndlieriqvdayfspihs
qldhlldpssftgrasqqvqrfleeevypllkpyes