Only [1-9]-PIP folds into two thermodynamically stable structures, while the other peptide models, [1-10]mini-IGF-1, [1-4]PIP, and [1-5]mini-IGF-1, fold into one stable structure as PIP does.

• 只有[1-9]PIP折叠为两种热力学稳定的二硫键配对结构。 而[1-10]mini-IGF-1,[1-4]PIP及[1-5]mini-IGF-1只折叠为一种稳定的结构。