Boc-Tyr(tBu)-Aib-Glu(OtBu)-Gly-OHwaa tetrapeptide la ilaaliyo oo caadi ahaan loo isticmaalo cilmi baarista isku dhafka peptide. Kooxaha Boc (tert-butyloxycarbonyl) iyo tBu (tert-butyl) waxay u adeegaan sidii kooxo ilaalin ah si ay uga hortagaan falcelinta dhinaca inta lagu guda jiro isu imaatinka silsiladda peptide. Ku darida Aib (α-aminoisobutyric acid) waxay gacan ka geysataa soo saarista qaababka helical iyo kordhinta xasilloonida peptide. Isku xigxiga peptide-kan waxaa lagu daraaseeyaa kartida uu u leeyahay falanqaynta qaabaysan, laalaabida peptide, iyo sidii dhisme dhisme loogu horumarinayo peptides bioactive oo leh xasillooni iyo gaar ahaaneed.