What molecular mechanisms drive bilirubin's selective enhancement of HCN1 channel activity?

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Description

The abstract shows bilirubin specifically targets HCN1 to increase channel activity and Ca2±dependent membrane targeting, but the direct molecular interaction mechanisms are not explained. Understanding this selectivity is crucial for developing targeted therapeutic interventions for hyperbilirubinemia encephalopathy.

Gap type: unexplained_observation Source paper: Selective Vulnerability of GABAergic Inhibitory Interneurons to Bilirubin Neurotoxicity in the Neonatal Brain. (2024, The Journal of neuroscience : the official journal of the Society for Neuroscience, PMID:39313321)

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