>2zrsF (F:) observed residues (from ATOM records)
sflwnvfqrvdkdrsgvisdtelqqalsngtwtpfnpvtvrsiismfdrenkagvnfsef
tgvwkyitdwqnvfrtydrdnsgmidknelkqalsgfgyrlsdqfhdilirkfdrqgrgq
iafddfiqgcivlqrltdifrrydtdqdgwiqvsyeqylsmvf