CLDN2

CLDN2 Gene Summary

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.[provided by RefSeq, Jan 2010]

Details

Type
Protein Coding
Official Symbol
CLDN2
Official Name
claudin 2 [Source:HGNC Symbol;Acc:HGNC:2041]
Ensembl ID
ENSG00000165376
Bio databases IDs NCBI: 9075 Ensembl: ENSG00000165376
Aliases claudin 2
Synonyms
Claudin-2,OAZON,RGD1560247
Species
Human, Homo sapiens

Protein Domains

A protein domain is a distinct structural or functional region within a protein that can evolve, function, and exist independently of the rest of the protein chain. These domains often fold into stable, three-dimensional structures and are associated with specific biological functions, such as binding to DNA, other proteins, or small molecules.
  • PMP-22/EMP/MP20/Claudin family
  • extracellular loop
  • protein binding
  • identical protein binding
  • transporter

Pathways

Biological processes and signaling networks where the CLDN2 gene plays a role, providing insight into its function and relevance in health or disease.

Top Findings

The most significant associations for this gene, including commonly observed domains, pathway involvement, and functional highlights based on current data.
binds
  • HNF4A
  • GATA4
  • GRM2
  • TEX264
  • HNF1A
  • KRTAP10-3
  • LPAR3
  • CDX2
  • ONECUT1
  • Enterotoxin
disease
  • hypercalciuria
  • colon adenocarcinoma
  • colon epithelial cancer
  • colon cancer
  • bronchiolo-alveolar adenocarcinoma
  • broncho-alveolar lung cancer
  • hypoxia
  • reperfusion injury
  • obstructive azoospermia with nephrolithiasis
  • hepatocellular carcinoma
regulated by
  • TNF
  • CDX2
  • GATA4
  • SPINT1
  • Caco2 cells
  • methotrexate
  • JNK
  • dextran sulfate
  • EGF
  • HCF-27 cells
regulates
  • FN1
  • ITGB1
  • Ca2+
  • agar
  • MMP9
  • water
  • chloride
  • ITGA5
  • Na+
  • ITGA2
role in cell
  • proliferation
  • expression in
  • activation in
  • growth
  • sphere formation
  • transepithelial electrical resistance
  • formation
  • internalization by
  • binding
  • polarization

Subcellular Expression

Locations within the cell where the protein is known or predicted to be active, providing insight into its function and cellular context.
  • Plasma Membrane
  • detergent-insoluble fractions
  • cell junction
  • intracellular membrane-bounded organelle
  • Cytoplasm
  • cell borders
  • apical compartment
  • cellular membrane
  • Nucleus
  • intercellular junctions
  • cell-cell contacts
  • tight junctional strands
  • apical membrane
  • nucleoplasm
  • nodes of Ranvier
  • Schmidt-Lanterman incisures
  • tight junctions
  • junctional complexes
  • microvilli

Gene Ontology Annotations

Describes the biological processes, cellular components, and molecular functions associated with the CLDN2 gene, providing context for its role in the cell.

BIOLOGICAL PROCESS

Functions and activities the gene product is involved in
  • calcium-independent cell-cell adhesion
  • transmembrane transport
  • tight junction assembly

CELLULAR COMPONENT

Where in the cell the gene product is active
  • tight junction
  • cell-cell junction
  • plasma membrane

MOLECULAR FUNCTION

What the gene product does at the molecular level
  • channel activity
  • identical protein binding
  • protein binding
  • structural molecule activity

Gene-Specific Assays for Results You Can Trust

Streamline your workflow with assays designed for this gene. Our targeted dPCR and qPCR assays help you generate meaningful data – efficiently and accurately.