Probing luminal negative charge in the type 3 ryanodine receptor

Nicholas Pugh1, Fiona C Mead-Savery, W John Coadwell

  • 1The Laboratory of Functional Immunogenetics, The Babraham Institute, Cambridge CB2 4AT, UK.

Summary

Neomycin blocks potassium current in the type 3 ryanodine receptor (RyR3) from the luminal side. This polycation exhibits higher affinity for RyR3 than RyR2, suggesting altered charge density in the RyR3 pore mouth.

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