Arecoline hydrobromide, Muscarinic receptor agonist

Supplementary information

This supplementary information is collated from multiple sources and compiled automatically.

TRPC4 known as Transient Receptor Potential Canonical 4 and TRPML3 also identified as MCOLN3 are non-selective cation channels that play significant roles in calcium signaling. TRPC4 has a molecular mass of around 100 kDa and is highly expressed in endothelial and smooth muscle cells as well as in the brain. TRPML3 with a mass of roughly 65 kDa predominantly occurs in the inner ear and retina. These channels facilitate the movement of calcium ions across cellular membranes contributing to various cellular processes.

Biological function summary

TRPC4 and TRPML3 contribute to key signal transduction pathways influencing cell function. TRPC4 interacts with proteins like muscarinic receptors and involves in the regulation of vasodilation and tissue remodeling through calcium modulation. TRPML3 functions in autophagy and lysosomal trafficking forming complexes with other TRP channels. Mutations in these channels disrupt normal calcium homeostasis indicating their significance in maintaining cellular health and communication.

Pathways

Both TRPC4 and TRPML3 are integral to calcium signaling cascades. TRPC4 participates in the phospholipase C pathway interacting with proteins such as phosphoinositide-dependent kinase-1 and arecoline muscarinic receptor agonists to modulate vascular and cardiac functions. TRPML3 relevant in the PI3K pathway impacts lysosomal function connecting with other lysosomal proteins. These pathways illustrate how these channels orchestrate calcium's role in physiological processes.

TRPC4's dysfunction associates with cardiovascular diseases particularly hypertension. Its regulatory actions on vascular tone involve interactions with nitric oxide synthase. TRPML3 relates to disorders such as hearing loss due to its role in ionic balance in the ear. Mutations in TRPML3 interact with other proteins affecting auditory hair cell function highlighting the importance of proper channel operation in disease manifestation.