>3unb4 (4:) observed residues (from ATOM records)
ttimavqfnggvvlgadsrtttgsyianrvtdkltpihdhifccrsgsaadtqavadavt
yqlgfhsielnepplvhtaaslfkemcyryredlmagiiiagwdpqeggqvysvpmggmm
vrqsfaiggsgssyiygyvdatyregmtkdeclqftanalalamerdgssggvirlaaiq
esgverqvllgdqipkftiatl