>1t69A (A:) observed residues (from ATOM records)
lvpvyiyspeyvsmcdslakipkrasmvhslieayalhkqmrivkpkvasmeematfhtd
aylqhlqkvsqpdsieyglgydcpategifdyaaaiggatitaaqclidgmckvainwsg
gwhhakkdeasgfcylndavlgilrlrrkferilyvdldlhhgdgvedafsftskvmtvs
lhkfspgffpgtgdvsdvglgkgryysvnvpiqdgiqdekyyqicesvlkevyqafnpka
vvlqlgadtiagdpmcsfnmtpvgigkclkyilqwqlatlilggggynlantarcwtylt
gvilgktlsseipdhefftaygpdyvleitpscrpdrnephriqqilnyikgnlkhvv