>1xi8A (A:) observed residues (from ATOM records)
rltpyeealsivlndlkeieeveyvplkdalgrvlaedivasydlsfagedvkkgdialk
kgtilrpqdlallkalgirkvpvkvkpkvgiiitvdtnsimlsalveryfgepilygvvp
dnedlirsalekakrecdlvlitgfvnllfhgttirpgrpigygervfvmsgypvavftq
fhlfvkhalaklvgakdyevkvravleddvpsqlgryefvrvmyrdgkakvikkgsgiis
slvqsnaylvvpedvegyrrgeevwvtly