ZO-1 forms complexes with either ZO-2 or ZO-3. In addition, these proteins can also associate with claudin, occludin and F-actin, at tight junction stands, where they provide a linkage between the actin cytoskeleton and the tight junction. ZO-1 expression is significantly reduced in many breast cancer lines. ZO-2 and ZO-3 are ubiquitously expressed within epithelial tight junctions, and unlike ZO-1, which is also expressed at cell junctions of cardiac myocytes, ZO-2 is not expressed in nonepithelial tissue. ZO-1 is a protein located on a cytoplasmic membrane surface of intercellular tight junctions. ZO-1 may be involved in signal transduction at cell-cell junctions. Two transcript variants encoding distinct isoforms have been identified for the ZO-1 gene. Diseases associated with ZO-1 dysfunction include Celiac Disease and Congenital Nephrotic Syndrome.
蛋白别名: DKFZp686M05161; MGC133289; OTTHUMP00000174520; Tight junction protein 1; Tight junction protein ZO-1; zona occludens 1; Zona occludens protein 1; zonula occludens 1 protein; Zonula occludens protein 1
基因别名: TJP1; ZO-1; ZO1
UniProt ID: (Human) Q07157
Entrez Gene ID: (Human) 7082
分子生物学功能: tight junction