>1xrnA (A:) observed residues (from ATOM records)
ecienyakvngiyiyyklckapeekaklmtmhggpgmshdyllslrdmtkegitvlfydq
fgcgrseepdqskftidygveeaealrsklfgnekvflmgssyggalalayavkyqdhlk
glivsgglssvpltvkemnrlidelpakyrdaikkygssgsyenpeyqeavnyfyhqhll
rsedwppevlksleyaerrnvyrimngpnqftitgtikdwditdkisaikiptlitvgey
devtpnvarvihekiagselhvfrdcshltmwedregynkllsdfilkhl