Trpm2 Protein Transient Receptor Potential Melastatin 2 is an important component in the neurobiology of neurodegenerative diseases. This page provides detailed information about its structure, function, and role in disease processes.
Overview
TRPM2 (Transient Receptor Potential Melastatin 2) is a calcium-permeable nonselective cation channel that functions as a oxidative stress sensor. It is activated by adenosine diphosphate ribose (ADPR) and oxidative stress, and plays important roles in oxidative stress response, cell death, and various cellular signaling pathways. [@bai2019]
Protein Information
Structure
TRPM2 has a complex structure unique among TRP channels:
Six Transmembrane Segments (S1-S6): Forms the channel pore
N-terminal ADPR Binding Domain: Unique feature for ADP-ribose activation
NUDT9 Homology Domain (NHD): C-terminal region that binds ADPR
Tetrameric Assembly: Forms functional homomers
Multiple Regulatory Sites: For phosphorylation, calmodulin binding
Molecular Function
Oxidative Stress Sensing
Activated by intracellular ADPR
Sensitive to [reactive oxygen species](/entities/reactive-oxygen-species) (ROS)
Links oxidative stress to calcium signaling
Calcium Permeability
Non-selective cation channel
Permeates Ca2+, Na+, K+
Large conductance for Ca2+ influx
Cell Death Pathways
Involved in both apoptotic and necrotic cell death
Mitochondrial dysfunction leads to activation
Contributes to [NMDA](/entities/nmda-receptor)-induced neurotoxicity
[Proteins/Trpm2-Protein](/proteins/trpm2-protein) — This page
Background
The study of Trpm2 Protein Transient Receptor Potential Melastatin 2 has evolved significantly over the past decades. Research in this area has revealed important insights into the underlying mechanisms of neurodegeneration and continues to drive therapeutic development.
Historical context and key discoveries in this field have shaped our current understanding and will continue to guide future research directions.
External Links
[PubMed](https://pubmed.ncbi.nlm.nih.gov/) - Biomedical literature
[Alzheimer's Disease Neuroimaging Initiative](https://adni.loni.usc.edu/) - Research data
[Allen Brain Atlas](https://brain-map.org/) - Brain gene expression data