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. 2014 Mar 18;9(3):e92089. doi: 10.1371/journal.pone.0092089

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© 2014 Heinzelmann, Kuyucak

This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are properly credited.

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(A) Site 1 is obtained by replacing Na1 by a K⁺ ion and equilibrating the system for 10 ns in the absence of other ligands (B) Site 2 is obtained by restraining K⁺ close to the E374 carboxyl group and equilibrating the system for 10 ns with no other ligands bound. (C) Site 3 is obtained by placing a K⁺ ion near glutamate -N atom and equilibrating the system for 10 ns in the absence of other ligands.

Inline graphic — (A) Site 1 is obtained by replacing Na1 by a K⁺ ion and equilibrating the system for 10 ns in the absence of other ligands (B) Site 2 is obtained by restraining K⁺ close to the E374 carboxyl group and equilibrating the system for 10 ns with no other ligands bound. (C) Site 3 is obtained by placing a K⁺ ion near glutamate -N atom and equilibrating the system for 10 ns in the absence of other ligands.