>3bthE (E:) observed residues (from ATOM records)
ivggytcgantvpyqvslnsgyhfcggslinsqwvvsaahcyksgiqvrlgedninvveg
neqfisasksivhpsynsntlnndimliklksaaslrvasislptscasagtqclisgwg
ntkssgtsypdvlkclkapilsdsscksaypgqitsnmfcagyleggkdscqgdsggpvv
csgklqgivswgsgcaqknkpgvytkvcnyvswikqtiasn