>1xz0A (A:) observed residues (from ATOM records)
plsfhviwiasfynhswkqnlvsgwlsdlqthtwdsnsstivflwpwsrgnfsneewkel
etlfrirtirsfegirryahelqfeypfeiqvtggcelhsgkvsgsflqlayqgsdfvsf
qnnswlpypvagnmakhfckvlnqnqhendithnllsdtcprfilglldagkahlqrqvk
peawlshgpspgpghlqlvchvsgfypkpvwvmwmrgeqeqqgtqrgdilpsadgtwylr
atlevaageaadlscrvkhsslegqdivlyw