>1x9fK (K:) observed residues (from ATOM records)
hehccseedhrivqkqwdilwrdtesskikigfgrllltklakdipevndlfkrvdieha
egpkfsahalrilngldlainllddppaldaaldhlahqhevregvqkahfkkfgeilat
glpqvlddydalawksclkgiltkissrl