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Abstract
Kvbeta has been identified as a functional aldo-keto reductase (AKR) that can influence ion channel activity.
- Kvbeta forms a permanent complex with voltage-dependent potassium channels (Kv1).
- Sequence and structural analysis suggests Kvbeta resembles an enzyme that uses NADPH for redox reactions.
- Oxidation of NADPH bound to Kvbeta modulates the function of the potassium channel.
- Evidence supports the idea that Kvbeta may act as a redox sensor in cells.
- These findings indicate that Kvbeta might link cellular excitability to metabolic state.
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