Key result
Filamin A interacts specifically with the HCN1 pacemaker channel, localizing it to membrane hot spots and modulating its gating kinetics.
The interaction between HCN1 and filamin A regulates the membrane localization and gating kinetics of pacemaker channels, which may influence cellular excitability.
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Advances molecular understanding of HCN modulation in cardiac pacemaking; leaves open any clinical relevance pending validation.
Gravante et al. (2004) studied this question. Filamin A vs. Cells lacking filamin A (filamin-) was evaluated on Protein interaction, membrane localization, and gating kinetics. Filamin A interacts specifically with the HCN1 pacemaker channel, localizing it to membrane hot spots and modulating its gating kinetics.
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