Yes, secretin is a protein.
Secretin is a hormone that plays a crucial role in regulating digestive processes. While the active form of secretin is a peptide comprised of 27 amino acids, it's initially synthesized as a larger precursor protein containing 120 amino acids. This precursor is processed to create the active 27-amino acid peptide. In this context, secretin is a protein because Secretin is a 27-amino acid peptide and is the active form of pro-secretin, which is known as a preprohormone and is synthesized as a larger precursor like other regulatory peptides. Secretin is initially synthesized as a 120 amino acid precursor protein.
| Feature | Description |
|---|---|
| Active Form | 27-amino acid peptide |
| Precursor Form | 120-amino acid protein |
| Classification | Regulatory peptide hormone |
| Synthesis | Synthesized as a larger precursor, similar to other regulatory peptides (22,23) |
