>2iy4S (S:) observed residues (from ATOM records)
svdtkeflnhqvanlnvftvkihqihwymrghnfftlhekmddlysefgeqmdevaerll
aiggspfstlkeflenasveeapytkpktmdqlmedlvgtlellrdeyqqgieltdkegd
nvtndmliafkasidkhiwmfkaflgkaple