>3ttnA (A:) observed residues (from ATOM records)
slhiynwtdyiapttlkdftkesgidvsydvfdsnetlegklvsghsgydivvpsnnflg
kqiqagafqkldksklpnwknldpallkqlevsdpgnqyavpylwgtngigynvakvkev
lgdqpidswailfepenmkklakcgvafmdsgdemlpaalnylgldpnthdpkdykkaee
vltkvrpyvsyfhsskyisdlangnicvafgysgdvfqaaaraeeagkgidiqyvipkeg
anlwfdlmaipadakaadnayafidyllrpeviakvsdyvgyanaipgarplmdksvsds
eevyppqavldklyvsavlpakvlrlqtrtwtrik