CLDN19 Gene Summary [Human]

The product of this gene belongs to the claudin family. It plays a major role in tight junction-specific obliteration of the intercellular space, through calcium-independent cell-adhesion activity. Defects in this gene are the cause of hypomagnesemia renal with ocular involvement (HOMGO). HOMGO is a progressive renal disease characterized by primary renal magnesium wasting with hypomagnesemia, hypercalciuria and nephrocalcinosis associated with severe ocular abnormalities such as bilateral chorioretinal scars, macular colobomata, significant myopia and nystagmus. Alternatively spliced transcript variants encoding distinct isoforms have been identified for this gene. [provided by RefSeq, Jun 2010]

Details

Type
Protein Coding
Official Symbol
CLDN19
Official Name
claudin 19 [Source:HGNC Symbol;Acc:HGNC:2040]
Ensembl ID
ENSG00000164007
Bio databases IDs NCBI: 149461 Ensembl: ENSG00000164007
Aliases claudin 19
Synonyms claudin-19, HOMG5
Species
Human, Homo sapiens
OrthologiesMouseRat

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 in human CLDN19 often fold into stable, three-dimensional structures and are associated with specific biological functions, such as binding to DNA, other proteins, or small molecules.
  • cell adhesion molecule binding
  • transmembrane domain
  • PMP-22/EMP/MP20/Claudin family
  • extracellular loop
  • protein binding
  • identical protein binding
  • transporter

Pathways

Biological processes and signaling networks where the CLDN19 gene in human 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.
disease
  • renal failure
  • breast cancer
  • colorectal cancer
  • renal hypomagnesemia type 5 with ocular involvement
  • germ cell neoplasia
  • yolk sac neoplasm
  • renal hypomagnesemia type 5 with or without ocular involvement
  • gait disturbance
  • hypomagnesemia
  • ophthalmic disorder
regulated by
role in cell
  • proliferation
  • migration
  • formation
  • assembly
  • abnormal morphology
  • organization
  • morphology

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
  • cell junction
  • Cytoplasm
  • cell surface
  • apical compartment
  • perinuclear region
  • cellular membrane
  • Nucleus
  • intercellular junctions
  • cell-cell contacts
  • basolateral membrane
  • paranodal junctions
  • inner mesaxons
  • mesaxons
  • Schmidt-Lanterman incisures
  • tight junctions
  • axons

Gene Ontology Annotations

Describes the biological processes, cellular components, and molecular functions associated with the human CLDN19 gene, providing context for its role in the cell.

Biological Process

Functions and activities the gene product is involved in
  • negative regulation of wound healing
  • calcium-independent cell-cell adhesion
  • negative regulation of cell proliferation
  • cell adhesion
  • visual perception
  • negative regulation of gene expression
  • positive regulation of gene expression
  • positive regulation of protein phosphorylation
  • tight junction assembly
  • neuronal action potential propagation
  • actin cytoskeleton organization
  • negative regulation of cell migration

Cellular Component

Where in the cell the gene product is active
  • nucleus
  • tight junction
  • perinuclear region of cytoplasm
  • apical junction complex
  • basolateral plasma membrane
  • plasma membrane

Molecular Function

What the gene product does at the molecular level
  • identical 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.