A mechanism for the auto-inhibition of hyperpolarization-activated cyclic nucleotide-gated (HCN) channel opening and its relief by cAMP

Madoka Akimoto, Zaiyong Zhang, Stephen Boulton, Rajeevan Selvaratnam, Bryan Van Schouwen, Melanie Gloyd, Eric A. Accili, Oliver F. Lange, Giuseppe Melacini

研究成果: Article

45 引用 (Scopus)

抜粋

Background: Hyperpolarization-activated cyclic nucleotide-gated (HCN) channels control electrical activity through tetramerization of an intracellular linker. Results: NMR shows that the apo-cAMP-binding domain (CBD) of HCN4 destabilizes the tetramer through steric clashes. Conclusion: The apo-HCN4 CBD structure is compatible with monomeric and dimeric but not with tetrameric HCN4. Significance: The proposed mechanism explains HCN auto-inhibition and its relaxation by cAMP.

元の言語English
ページ(範囲)22205-22220
ページ数16
ジャーナルJournal of Biological Chemistry
289
発行部数32
DOI
出版物ステータスPublished - 2014 8 8

    フィンガープリント

ASJC Scopus subject areas

  • Biochemistry
  • Molecular Biology
  • Cell Biology

これを引用

Akimoto, M., Zhang, Z., Boulton, S., Selvaratnam, R., Van Schouwen, B., Gloyd, M., Accili, E. A., Lange, O. F., & Melacini, G. (2014). A mechanism for the auto-inhibition of hyperpolarization-activated cyclic nucleotide-gated (HCN) channel opening and its relief by cAMP. Journal of Biological Chemistry, 289(32), 22205-22220. https://doi.org/10.1074/jbc.M114.572164