>1tu3E (E:) observed residues (from ATOM records)
nkicqfklvllgesavgksslvlrfvkgqfhefqestigaafltqtvclddttvkfeiwd
tagqeryhslapmyyrgaqaaivvyditneesfaraknwvkelqrqaspnivialsgnka
dlankravdfqeaqsyaddnsllfmetsaktsmnvneifmaiakklp