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. 2013 Jul;142(1):23–35. doi: 10.1085/jgp.201210893

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© 2013 Lopez et al.

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Figure 4. — Possible intersubunit salt bridge interaction between positions D50 and K61 in the open conformation. (A) Top (extracellular) view of the hCx26 hemichannel from the crystal structure (Protein Data Bank accession no. 2ZW3; Maeda et al., 2009). Positions D50 and K61 are highlighted in red and blue (in all subunits), respectively. (B) Enlargement showing the proximity between position D50 in one subunit and position K61 in the adjacent subunit. The average distance for the six pairs of D50–K61 residues is ∼4.4 Å.