3ATA: Crystal Structure Of The Kir3.2 Cytoplasmic Domain (Na+-Free Soaked In 10 Mm Barium Chloride And 10 Mm Spermine)
reference: Interactions of cations with the cytoplasmic pores of inward rectifier K(+) channels in the closed state., Inanobe A, Nakagawa A, Kurachi Y, J Biol Chem. 2011 Dec 2;286(48):41801-11. Epub 2011 Oct 9. PMID: 21982822

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