Claudin-2-dependent Changes in Noncharged Solute Flux Are Mediated by the Extracellular Domains and Require Attachment to the PDZ-scaffold

Paracellular transport through the tight junction shows selectivity for both ionic charge and solute size. It is known that charged residues on the extracellular loops of claudins control charge selectivity. It is also known that inducible expression of claudin‐2, but not claudin‐4, will selectively...

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