>1xtqA (A:) observed residues (from ATOM records)
qsksrkiailgyrsvgkssltiqfvegqfvdsydptientftklitvngqeyhlqlvdta
gqdeysifpqtysidingyilvysvtsiksfevikvihgklldmvgkvqipimlvgnkkd
lhmervisyeegkalaeswnaaflessakenqtavdvfrriileaekle