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Potassium channel selectivity filter

PDB ID: 1K4C

Potassium channels allow potassium ions to pass through membranes. This structure shows the membrane-crossing portion, with a specific arrangement of oxygen atoms that provides the selectivity for potassium.

Read the Molecule of the Month article on Potassium Channels.
Discussed Structures from Potassium Channels
potassium channel selectivity filter
potassium channel selectivity filter
potassium channel
potassium channel
 3D structure
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Length: 219
Type: protein
Length: 212
Type: protein
Length: 124
Type: protein
 
 
 
 

Reference

PDB ID: 1K4C , Pubmed

Zhou, Y., Morais-Cabral, J.H., Kaufman, A., MacKinnon, R. (2001) Chemistry of ion coordination and hydration revealed by a K+ channel-Fab complex at 2.0 A resolution. Nature 414: 43-8


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