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. 2021 May 18;12:689678. doi: 10.3389/fendo.2021.689678

Table 7.

Glucagon and related peptide analogues at preclinical stage for T2DM.

Peptide Name AA Sequence Target Receptor Reference
Native glucagon HSQGTFTSDYSKYLDSRRAQDFVQWLMNT CGCR (10)
N-Acetyl-glucagon Ac-HSQGTFTSDYSKYLDSRRAQDFVQWLMNT GCGR (365)
(D-Ser2)glucagon HDSQGTFTSDYSKYLDSRRAQDFVQWLMNT GCGR/GLP-1R (365)
(D-Ser2)glucagon-exe HDSQGTFTSDYSKYLDSRRAQDFVQWLMNTPSSGAPPPS GCGR/GLP-1R (365)
Dogfish Glucagon HSEGTFTSDYSKYMDNRRAKDFVQWLMSTKRNG GCGR/GLP-1R (366, 367)
(D-Ala2)dogfish glucagon HDAEGTFTSDYSKYMDNRRAKDFVQWLMSTKRNG GCGR/GLP-1R (366, 367)
(D-Ala2)dogfish glucagon-exendin-4(31-39) HDAEGTFTSDYSKYMDNRRAKDFVQWLMSTKRNGPSSGAPPPS GCGR/GLP-1R (366, 367)
(D-Ala2)dogfish glucagon-Lys30-γ-glutamyl-PAL HDAEGTFTSDYSKYMDNRRAKDFVQWLMSTK(*PAL)RNG GCGR/GLP-1R (366, 367)
Paddlefish glucagon HSQGMFTNDYSKYLEEKRAKEFVEWLKNGKS GCGR/GLP-1R (248)

Amino acid sequences are provided in their single-letter abbreviation format. Modifications from native sequences are highlighted by red lettering. The receptor targets for each molecule are provided. A “D” prefix before a residue indicates inclusion of the enantiomer for the naturally-occurring L form of the residue. “Ac” represents an N-terminal acetylation. “mPEG” indicates mini-polyethylene glycol addition. “PAL” indicates the addition of a palmitic fatty acid chain.