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polypeptide |
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polypeptide: see peptide peptide, organic compound composed of amino acids linked together chemically by peptide bonds. The peptide bond always involves a single covalent link between the α-carboxyl (oxygen-bearing carbon) of one amino acid and the amino nitrogen of a second amino acid. ..... Click the link for more information. . polypeptide [¦päl·i′pep‚tīd] (biochemistry) A chain of amino acids linked together by peptide bonds but with a lower molecular weight than a protein; obtained by synthesis, or by partial hydrolysis of protein. How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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While the most common mediators of salivary gland secretion are autonomic, neurons release vasoactive intestinal polypeptide and substance P, thereby stimulating acinar cells to release calcium and secrete saliva. In some of their earliest work, Paul and his colleagues reported that people with asthma have antibodies that cleave an antiinflammatory protein called vasoactive intestinal polypeptide. Is vasoactive intestinal polypeptide the principal transmitter involved in human penile erection? |
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