>3tuyF (F:) observed residues (from ATOM records)
klsqdeiddlkevfelfdfwdgrdgavdafkigdvcrclginprnedvfavggthkmgek
slpfeeflpayeglmdceqgtyadymeafktfdregqgfisgaelrhvlsglgerlsdee
vdeiinltdlqedlegnvkyeefvkkvmtgp