How potassium channels control heart and brain electrical signals
Structure-function studies on Ion channels
Researchers are changing precise parts of potassium channels to learn how they open and close, which could help people with heart rhythm problems and some seizure disorders.
Quick facts
| Grant type | NIH-funded research |
|---|---|
| Study type | NIH-funded research |
| Funding institution | Oregon Health & Science University NIH-funded |
| Lab location | 1 site (Portland, United States) |
| Project ID | NIH-11312686 on NIH RePORTER |
What this research studies
This project studies voltage-gated potassium (Kv) channels that help nerves, muscles and the heart send electrical signals. The team combines high-resolution structural work with laboratory function tests to see how channels switch on and off, focusing on voltage activation and a change called C-type inactivation. They use a technique called unnatural amino acid mutagenesis to make very specific protein changes that reveal the roles of individual side chains and backbone interactions. The work includes model channels such as Shaker, Kv1.2 and the cardiac HERG channel, with HERG linked to dangerous heart arrhythmias.
Who could benefit from this research
Good fit: People with cardiac arrhythmias, inherited ion-channel disorders (for example Long QT syndromes), or certain epilepsy syndromes are most directly related to this research.
Not a fit: Patients with conditions unrelated to ion-channel function or those hoping for immediate new therapies are unlikely to gain direct benefit from this basic laboratory research.
Why it matters
Potential benefit: If successful, this work could improve understanding that guides safer drugs and new treatments for heart rhythm disorders and some neurological conditions.
How similar studies have performed: Previous structural and functional studies of ion channels have clarified gating mechanisms and informed drug safety, while using unnatural amino acid mutagenesis for these specific gating questions is relatively novel.
Where this research is happening
Portland, United States
- Oregon Health & Science University — Portland, United States (Active)
Researchers
- Principal investigator: Valiyaveetil, Francis — Oregon Health & Science University
- Study coordinator: Valiyaveetil, Francis
About this research
- This is an active NIH-funded research project — typically early-stage science, not a clinical trial accepting patient enrollment.
- Some NIH-funded labs run parallel clinical studies or seek volunteers for related work. To check, contact the principal investigator or institution listed above.
- For full project details, budget, and progress reports, visit the official NIH RePORTER page below.