Kcnj9 Protein (Kir3.3 Potassium Channel) is an important component in the neurobiology of neurodegenerative diseases. This page provides detailed information about its structure, function, and role in disease processes.
:: infobox .infobox-protein
| KCNJ9 Protein (Kir3.3 Potassium Channel) | |
|---|---|
| Gene | KCNJ9 |
| UniProt | P48545 |
| Molecular Weight | ~48 kDa |
| Subcellular Localization | Plasma membrane |
| Protein Family | Inward rectifier potassium channel family |
| Aliases | KIR3.3, GIRK3 |
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KCNJ9 (Kir3.3) is an inward-rectifier potassium channel. It forms functional heterotetramers with other Kir3.x subunits. Each subunit contains two transmembrane domains and a pore loop between them.
Kir3.3 regulates neuronal excitability:
KCNJ9 is implicated in PD:
Kir3 channels modulate neuronal excitability and are altered in epileptic brain.
Kir3.x channels in reward pathways are affected by drugs of abuse.
KCNJ9 modulators are being explored for:
The study of Kcnj9 Protein (Kir3.3 Potassium Channel) 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.
The KCNJ9 Protein is a protein involved in various cellular processes in the nervous system. This protein plays important roles in neuronal function, signal transduction, and cellular homeostasis. Dysfunction of this protein has been implicated in neurodegenerative diseases including Alzheimer's disease, Parkinson's disease, and amyotrophic lateral sclerosis.
The KCNJ9 Protein participates in multiple molecular pathways critical for neuronal health. It is expressed in various brain regions and cell types, where it contributes to synaptic transmission, membrane potential regulation, and intracellular signaling cascades.
Alterations in KCNJ9 Protein expression or function have been associated with several neurodegenerative conditions. Research suggests that this protein may serve as a therapeutic target for disease modification in AD, PD, and related disorders.