English: Homodimeric two-pore domain potassium channel K2P1 with bound potassium ions (purple). Four helices extend away from the membrane, into the extra-cellular space. Voids in the channel protein are filled with electron density consistent with alkyl chains (black). PDB: 3UKM
Date
(upload to Wikimedia Commons), 9 November 2011 (deposition at PDB)
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