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. Author manuscript; available in PMC: 2020 Dec 14.
Published in final edited form as: Mol Cell Endocrinol. 2020 Sep 8;518:111025. doi: 10.1016/j.mce.2020.111025

Fig. 1. Highly conserved amino acids B20 and B28 in different species.

Fig. 1.

Structure of preproinsulin: The signal peptide (SP, yellow), insulin B chain (green), C peptide (blue), insulin A chain (red), S-S indicate the B19-A20, A6-A11, B7-A7 three different disulfide bonds. B chain alignment between human INS and orthologs. Amino acids B20 and B28 were marked with red and purple, respectively.