Identification of a gene encoding a hyperpolarization-activated pacemaker channel of brain - PubMed (original) (raw)

Comparative Study

. 1998 May 29;93(5):717-29.

doi: 10.1016/s0092-8674(00)81434-8.

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• PMID: 9630217
• DOI: 10.1016/s0092-8674(00)81434-8

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Comparative Study

Identification of a gene encoding a hyperpolarization-activated pacemaker channel of brain

B Santoro et al. Cell. 1998.

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Abstract

The generation of pacemaker activity in heart and brain is mediated by hyperpolarization-activated cation channels that are directly regulated by cyclic nucleotides. We previously cloned a novel member of the voltage-gated K channel family from mouse brain (mBCNG-1) that contained a carboxy-terminal cyclic nucleotide-binding domain (Santoro et al., 1997) and hence proposed it to be a candidate gene for pacemaker channels. Heterologous expression of mBCNG-1 demonstrates that it does indeed code for a channel with properties indistinguishable from pacemaker channels in brain and similar to those in heart. Three additional mouse genes and two human genes closely related to mBCNG-1 display unique patterns of mRNA expression in different tissues, including brain and heart, demonstrating that these channels constitute a widely expressed gene family.

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