Kcne2 plays an important role in the study of neurodegenerative diseases. This page provides comprehensive information about this topic, including its mechanisms, significance in disease processes, and therapeutic implications.
Kcne2 is an important component in the neurobiology of neurodegenerative diseases. This page provides detailed information about its structure, function, and role in disease processes.
KCNE2 encodes a small single-pass transmembrane protein that functions as a regulatory subunit (beta subunit) for voltage-gated potassium channels, particularly the KCNQ1 (Kv7.1) channel.
| Attribute | Value |
|---|---|
| Symbol | KCNE2 |
| Full Name | Potassium Voltage-Gated Channel Subfamily E Member 2 |
| Alias | MinK-Related Peptide 1 (MiRP1) |
| Chromosomal Location | 21q22.11 |
| NCBI Gene ID | 9993 |
| OMIM ID | 603444 |
| Ensembl ID | ENSG00000155974 |
| UniProt ID | Q9Y6H6 |
KCNE2 (also known as MiRP1) encodes a 123-amino acid transmembrane protein that co-assembles with KCNQ1 (Kv7.1) alpha subunits to form cardiac IKr (rapid delayed rectifier) and IKs-like currents in various tissues 1. Unlike KCNE1, KCNE2 produces channels with faster activation kinetics.
In the heart, the KCNQ1/KCNE2 complex contributes to ventricular repolarization. KCNE2 also assembles with other Kv channels, including hERG (KCNH2), modulating their gating properties.
In the brain, KCNE2 is expressed in various regions including hippocampus and cortex, where it modulates neuronal excitability, though its central nervous system functions are less characterized.
KCNE2 variants are associated with long QT syndrome (LQT) and predispose to torsades de pointes, a potentially fatal polymorphic ventricular tachycardia 2. KCNE2 mutations can also cause atrial fibrillation.
Emerging research suggests KCNE2 may play a role in AD. The protein is expressed in brain regions affected by AD, and altered expression has been documented in AD models. KCNE2 may interact with amyloid-beta to influence neuronal potassium homeostasis 3.
KCNE2 variants have been linked to atrial fibrillation, the most common sustained cardiac arrhythmia. The KCNQ1/KCNE2 current is important for atrial repolarization 4.
KCNE2 is expressed in heart (especially atria), kidney, stomach, small intestine, and brain. In the brain, expression is detected in hippocampus, cortex, and cerebellum.
Kcne2 plays an important role in the study of neurodegenerative diseases. This page provides comprehensive information about this topic, including its mechanisms, significance in disease processes, and therapeutic implications.
The study of Kcne2 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.