Promotes functional cell surface expression of the bitter taste receptors TAS2R16 and TAS2R43.
Subcellular locations: Membrane
Expressed predominantly in adult liver (, ). Expressed in testis (, ). Also expressed in kidney, lung and fetal liver . Low levels in heart, thyroid, adrenal gland, pancreas, ovary, prostate, skin, plasma leukocytes, bone marrow and fetal brain . Not detected in brain, spleen, colon, small intestine, skeletal muscle, stomach, placenta, salivary gland and uterus .