>2bk6F (F:) observed residues (from ATOM records)
vdtkeflnhqvanlnvftvkihqigwymrghnfftlhekmddlysefgeqmdevaerlla
iggspfstlkeflenasveeapytkpktmdqlmedlvgtlellrdeykqgieltdkegdd
vtndmliafkasidkhiwmfkaflgkaple