Description of target: This gene product belongs to the claudin protein family whose members have been identified as major integral membrane proteins localized exclusively at tight junctions. Claudins are expressed in an organ-specific manner and regulate tissue-specific physiologic properties of tight junctions. This protein is expressed in the intestine. Alternatively spliced transcript variants with different 5' untranslated region have been found for this gene.;Species reactivity: Human;Application: ELISA;Assay info: Assay Methodology: Quantitative Sandwich ELISA;Sensitivity: 0.058 ng/mL