>1tndA (A:) observed residues (from ATOM records)
artvkllllgagesgkstivkqmkiihqdgysleeclefiaiiygntlqsilaivramtt
lniqygdsarqddarklmhmadtieegtmpkemsdiiqrlwkdsgiqacfdraseyqlnd
sagyylsdlerlvtpgyvpteqdvlrsrvkttgiietqfsfkdlnfrmfdvggqrserkk
wihcfegvtciifiaalsaydmvlveddevnrmheslhlfnsicnhryfattsivlflnk
kdvfsekikkahlsicfpdyngpntyedagnyikvqflelnmrrdvkeiyshmtcatdtq
nvkfvfdavtdiiikenlkdcgl