polypeptide
- n a peptide containing 10 to more than 100 amino acids
- In men, a chemical that facilitates the flow is vasoactive intestinal polypeptide, a hormone that also directs the expansion and contraction of smooth muscles in the .
- It is a polypeptide, a large molecule (molecular weight 4,500) made up of many amino-acid units arranged in a long chain.
- And there are numerous other bodily chemicals that turn us on, ranging from the commonplace, nitric oxide, to the obscure, vasoactive intestinal polypeptide.