>1bbt1 (1:) observed residues (from ATOM records)
ttsagesadpvtttvenyggetqiqrrqhtdvsfimdrfvkvtpqnqinildlmqvpsht
lvggllrastyyfsdleiavkhegdltwvpngapekaldnttnptayhkapltrlalpyt
aphrvlatvyngecrtlptsfnygaikatrvtellyrmkraetycprpllaihptearhk
qkivap