>1xasA (A:) observed residues (from ATOM records)
lgaaaaqsgryfgtaiasgrlsdstytsiagrefnmvtaenemkidatepqrgqfnfssa
drvynwavqngkqvrghtlawhsqqpgwmqslsgrplrqamidhingvmahykgkivqwd
vvneafadgssgarrdsnlqrsgndwievafrtaraadpsaklcyndynvenwtwaktqa
mynmvrdfkqrgvpidcvgfqshfnsgspynsnfrttlqnfaalgvdvaiteldiqgapa
styanvtndclavsrclgitvwgvrdsdswrseqtpllfnndgskkaaytavlda