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                                            Overview
                                            
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Background
Occludin is an integral membrane protein located at the tight junction. It is a tetraspanin protein with four transmembrane domains,intracellular N and C termini and two extracellular loops. Occludin plays a role in the formation and regulation of the tight junction paracellular permeability barrier. Occludin can exist in different isoforms,owing to modifications at the posttranscriptional and posttranslational levels .
 
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 - Properties
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                                            Overview