Topic summary
Nonapeptide
Extracted from the Wikipedia article Peptide.
Number of amino acids
- A monopeptide has one amino acid (not alone but combined with (an)other type(s) of molecule(s)).
- A dipeptide has two amino acids.
- A tripeptide has three amino acids.
- A tetrapeptide has four amino acids.
- A pentapeptide has five amino acids. (e.g., enkephalin).
- A hexapeptide has six amino acids. (e.g., angiotensin IV).
- A heptapeptide has seven amino acids. (e.g., spinorphin).
- An octapeptide has eight amino acids (e.g., angiotensin II).
- A nonapeptide has nine amino acids (e.g., oxytocin).
- A decapeptide has ten amino acids (e.g., gonadotropin-releasing hormone and angiotensin I).
- A undecapeptide has eleven amino acids (e.g., substance P).