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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
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Length: 219
Type:
protein
Length: 212
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protein
Length: 124
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protein
 
 
 
 

Reference

PDB ID: 1K4C , Pubmed

Chemistry of ion coordination and hydration revealed by a K+ channel-Fab complex at 2.0 A resolution.

Zhou, Y., Morais-Cabral, J.H., Kaufman, A., MacKinnon, R.

Journal: (2001) Nature 414: 43-48


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