>3fvfB (B:) observed residues (from ATOM records)
itggssavagqwpwqvsityegvhvcggslvseqwvlsaahcfpsehhkeayevklgahq
ldsysedakvstlkdiiphpsylqegsqgdiallqlsrpitfsryirpislpaaqasfpn
glhctvtgwghvapsvslltpkplqqlevplisretcnslynidakpeephfvqedmvca
gyveggkdacqgdsggplscpveglwyltgivswgdacgarnrpgvytlassyaswiqsk
vtelqprv