Triphenylphosphine oxide is a potent and selective inhibitor of the transient receptor potential melastatin-5 ion channel.

Transient receptor potential melastatin-5 (TRPM5) is a calcium-gated monovalent cation channel expressed in highly specialized cells of the taste bud and gastrointestinal tract, as well as in pancreatic β-cells. Well established as a critical signaling protein for G protein-coupled receptor-mediated taste pathways, TRPM5 also has recently been implicated as a regulator of incretin and insulin secretion. To date, no inhibitors of practical use have been described that could facilitate investigation of TRPM5 functions in taste or secretion of metabolic hormones.

Overexpression of human transient receptor potential M5 upregulates endogenous human transient receptor potential A1 in a stable HEK cell line.

Transient receptor potential M5 (TRPM5), a monovalent cation channel, is primarily activated by increases in intracellular calcium. However, we found unexpectedly that allyl isothiocyanate (AITC) and structural analogs triggered a membrane potential and calcium dye responses in TRPM5-HEK cells (AITC EC₅₀ = 9.0 ± 2.

Developmental and activity-dependent regulation of ARMS/Kidins220 in cultured rat hippocampal neurons.

Neurotrophin activation of Trk receptors elicits diverse effects on neuronal survival, differentiation, and synaptic plasticity. One of the central questions is how specificity is encoded in neurotrophin receptor signaling and actions. A unique downstream protein is the Ankyrin-Repeat Rich Membrane Spanning (ARMS)/Kinase D-interacting substrate-220 kDa (Kidins220), a very abundant scaffold protein in the hippocampus.