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. Author manuscript; available in PMC: 2013 Nov 21.
Published in final edited form as: Chem Commun (Camb). 2010 Sep 28;46(43):10.1039/c0cc03141k. doi: 10.1039/c0cc03141k

Fig. 4.

Fig. 4

(a) CD spectra of biosynthetic vs. synthetic l-proinsulin. (b) Insulin receptor-binding assays for biosynthetic insulin (●), biosynthetic l-proinsulin (··■··), synthetic l-proinsulin (■), synthetic D-proinsulin (–·○–·).