>2iy4A (A:) observed residues (from ATOM records)
svdtkeflnhqvanlnvftvkihqihwymrghnfftlhekmddlysefgeqmdevaerll
aiggspfstlkeflenasveeapytkpktmdqlmedlvgtlellrdeyqqgieltdkegd
nvtndmliafkasidkhiwmfkaflgkaple