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Amino acid sequence of GLP-1, exendin-3, exendin-4 and exendin(9-39). The homologous amino acids compared to GLP-1 are underlined.
| Peptide | Amino acid sequence |
|---|---|
| GLP-1 | HAEGTFTSDVSSYLEGQAAKEFIAWLVKGRG |
| exendin-3 | HSDGTFTSDLSKQMEEEAVRLFIEWLKNGGPSSGAPPPS-NH2 |
| exendin-4 | HGEGTFTSDLSKQMEEEAVRLFIEWLKNGGPSSGAPPPS-NH2 |
| exendin(9-39) | DLSKQMEEEAVRLFIEWLKNGGPSSGAPPPS-NH2 |
