The protein encoded by this gene is a bitter taste receptor that detects green tea catechins, soy isoflavones, and theaflavins. The encoded protein is gustducin-linked and may activate alpha gustducin. This gene is intronless.TAS2R39 (Taste 2 Receptor Member 39) is a Protein Coding gene. Among its related pathways are Peptide ligand-binding receptors and Taste transduction. GO annotations related to this gene include G-protein coupled receptor activity and bitter taste receptor activity. An important paralog of this gene is TAS2R40.