alexa Bitter peptides activate hTAS2Rs, the human bitter receptors.


Drug Designing: Open Access

Author(s): Maehashi K, Matano M, Wang H, Vo LA, Yamamoto Y, , Maehashi K, Matano M, Wang H, Vo LA, Yamamoto Y,

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Abstract Fermented food contains numerous peptides derived from material proteins. Bitter peptides formed during the fermentation process are responsible for the bitter taste of fermented food. We investigated whether human bitter receptors (hTAS2Rs) recognize bitterness of peptides with a heterologous expression system. HEK293 cells expressing hTAS2R1, hTAS2R4, hTAS2R14, and hTAS2R16 responded to bitter casein digests. Among those cells, the hTAS2R1-expressing cell was most strongly activated by the synthesized bitter peptides Gly-Phe and Gly-Leu, and none of the cells was activated by the non-bitter dipeptide Gly-Gly. The results showed that these bitter peptides, as well as many other bitter compounds, activate hTAS2Rs, suggesting that humans utilize these hTAS2Rs to recognize and perceive the structure and bitterness of peptides.
This article was published in Biochem Biophys Res Commun and referenced in Drug Designing: Open Access

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