| 68627 | Cldn1 | claudin 1 | This gene encodes a member of the claudin family. Claudins are integral membrane proteins and components of tight junction strands. Tight junction strands serve as a physical barrier to prevent solutes and water from passing freely through the paracellular space between epithelial or endothelial cel l sheets, and also play critical roles in maintaining cell polarity and signal transductions. The knockout mice lacking this gene die soon after birth as a consequence of dehydration from trandermal water loss, indicating that this gene is indispensable for creating and maintaining the epidermal barrier. The protein encoded by this gene also has gastric tumor suppressive activity, and is a key factor for hepatitis C virus (HCV) entry. [provided by RefSeq, Aug 2010] | 16 | 26175395 | 26190589 | Mouse | 476 | symbol , PhenoGen | gene, protein-coding, REVIEWED [RefSeq] |
| 1317559 | Cldn10 | claudin 10 | This intronless gene encodes a member of the claudin family. Claudins are integral membrane proteins and components of tight unction strands. Tight junction strands serve as a physical barrier to prevent solutes and water from passing freely through the paracellular space between epithelial or endot helial cell sheets, and also play critical roles in maintaining cell polarity and signal transductions. Six alternatively spliced transcript variants have been identified, which encode different isoforms with distinct electric charge of the first extracellular loop and with or without the fourth transmembrane region. These isoforms exhibit distinct localization and function in paracellular anion or cation permeability. [provided by RefSeq, Aug 2010] | 14 | 119025283 | 119111937 | Mouse | 131 | symbol , PhenoGen , old_gene_symbol | gene, protein-coding, REVIEWED [RefSeq] |
| 737604 | Cldn11 | claudin 11 | This gene encodes a member of the claudin family. Claudins are integral membrane proteins and components of tight junction strands. Tight junction strands serve as a physical barrier to prevent solutes and water from passing freely through the paracellular space between epithelial or endothelial cel l sheets, and also play critical roles in maintaining cell polarity and signal transductions. The protein encoded by this gene is a major component of CNS (central nervous system) myelin and plays an important role in regulating proliferation and migration of oligodendrocytes. The basal cell tight junctions in stria vascularis are primarily composed of this protein, and the gene-null mice suffer severe deafness. This protein is also an obligatory protein for tight junction formation and barrier integrity in the testis and the gene deficiency results in loss of the Sertoli cell epithelial phenotype in the testis. [provided by RefSeq, Aug 2010] | 3 | 31204069 | 31218475 | Mouse | 229 | symbol , PhenoGen | gene, protein-coding, REVIEWED [RefSeq] |
| 1314175 | Cldn12 | claudin 12 | This gene encodes a member of the claudin family. Claudins are integral membrane proteins and components of tight junction strands. Tight junction strands serve as a physical barrier to prevent solutes and water from passing freely through the paracellular space between epithelial or endothelial cel l sheets, and also play critical roles in maintaining cell polarity and signal transductions. This gene, along with several other family members, is expressed in the inner ear. The protein encoded by this gene and another family member, claudin 2, are critical for vitamin D-dependent Ca2+ absorption between enterocytes. Multiple alternatively spliced transcript variants encoding the same protein have been found. [provided by RefSeq, Oct 2011] | 5 | 5555109 | 5564953 | Mouse | 131 | symbol , PhenoGen | gene, protein-coding, REVIEWED [RefSeq] |
| 1624020 | Cldn13 | claudin 13 | This gene encodes a member of the claudin family. Claudins are integral membrane proteins and components of tight junction strands. Tight junction strands serve as a physical barrier to prevent solutes and water from passing freely through the paracellular space between epithelial or endothelial cel l sheets, and also play critical roles in maintaining cell polarity and signal transductions. The protein encoded by this gene is a developmentally expressed renal tight junction protein. This gene is expressed in the cecum, colon, liver and kidney of mice, but is not identified in rat tissues. Humans and chimpanzees lack this gene. [provided by RefSeq, Aug 2010] | 5 | 134943104 | 134944384 | Mouse | 38 | symbol , PhenoGen | gene, protein-coding, REVIEWED [RefSeq] |
| 1319354 | Cldn14 | claudin 14 | This gene encodes a member of the claudin family of tight junction proteins. The encoded protein is an integral membrane protein that may function in maintaining apical membrane polarization in tight junctions located between outer hair cells and supporting cells. Loss of function of this gene is as sociated with hearing problems. Alternative splicing results in multiple transcript variants. [provided by RefSeq, Oct 2009] | 16 | 93715919 | 93809733 | Mouse | 110 | symbol , PhenoGen | gene, protein-coding, REVIEWED [RefSeq] |
| 1321721 | Cldn15 | claudin 15 | This gene encodes a member of the claudin family. Claudins are integral membrane proteins and components of tight junction strands. Tight junction strands serve as a physical barrier to prevent solutes and water from passing freely through the paracellular space between epithelial or endothelial cel l sheets, and also play critical roles in maintaining cell polarity and signal transductions. This protein increases permeability for sodium ions in anion-selective epithelial cell sheets. The gene deficiency leads to megaintestine and decreases in intestinal epithelial paracellular ion permeability. This gene is a direct target for hepatocyte-nuclear-factor-4alpha, a mediator of ion epithelial transport, and is down-modulated in inflammatory bowel disease. [provided by RefSeq, Aug 2010] | 5 | 136996723 | 137004699 | Mouse | 102 | symbol , PhenoGen | gene, protein-coding, REVIEWED [RefSeq] |
| 733040 | Cldn16 | claudin 16 | This gene encodes a member of the claudin family. Claudins are integral membrane proteins and components of tight junction strands. Tight junction strands serve as a physical barrier to prevent solutes and water from passing freely through the paracellular space between epithelial or endothelial cel l sheets, and also play critical roles in maintaining cell polarity and signal transductions. The protein encoded by this gene is critical for renal paracellular epithelial transport of Ca(2+) and Mg(2+) in the thick ascending loop of Henle. The gene deficiency leads to specific alterations in renal Ca(2+) and Mg(2+) balance and also to disturbances in Na(+) handling. The interaction of this gene and the Cldn 19 gene is required for their assembly into tight junctions and for renal Mg(2+) reabsorption. This gene and the Cldn1 gene are clustered on chromosome 16. [provided by RefSeq, Aug 2010] | 16 | 26281885 | 26301515 | Mouse | 92 | symbol , PhenoGen , description | gene, protein-coding, REVIEWED [RefSeq] |
| 1316670 | Cldn17 | claudin 17 | This gene encodes a member of the claudin family. Claudins are integral membrane proteins and components of tight junction strands. Tight junction strands serve as a physical barrier to prevent solutes and water from passing freely through the paracellular space between epithelial or endothelial cel l sheets, and also play critical roles in maintaining cell polarity and signal transductions. This gene is intronless and is clustered with the Cldn8 gene on chromosome 16. [provided by RefSeq, Aug 2010] | 16 | 88302695 | 88303866 | Mouse | 78 | symbol , PhenoGen | gene, protein-coding, REVIEWED [RefSeq] |
| 1552402 | Cldn18 | claudin 18 | This gene encodes a member of the claudin family. Claudins are integral membrane proteins and components of tight junction strands. Tight junction strands serve as a physical barrier to prevent solutes and water from passing freely through the paracellular space between epithelial or endothelial cel l sheets, and also play critical roles in maintaining cell polarity and signal transductions. This gene is a downstream target gene regulated by the T/EBP/NKX2.1 homeodomain transcription factor. Four alternatively spliced transcript variants resulted from alternative promoters and alternative splicing have been identified, which encode two lung-specific isoforms and two stomach-specific isoforms respectively. This gene is also expressed in colons, inner ear and skin, and its expression is increased in both experimental colitis and ulcerative colitis. [provided by RefSeq, Aug 2010] | 9 | 99572849 | 99599320 | Mouse | 106 | symbol , PhenoGen | gene, protein-coding, REVIEWED [RefSeq] |
| 1312767 | Cldn19 | claudin 19 | This gene encodes a member of the claudin family. Claudins are integral membrane proteins and components of tight junction strands. Tight junction strands serve as a physical barrier to prevent solutes and water from passing freely through the paracellular space between epithelial or endothelial cel l sheets, and also play critical roles in maintaining cell polarity and signal transductions. siRNA knockdown of this gene in mice develops the FHHNC (familial hypomagnesemia with hypercalciuria and nephrocalcinosis) symptoms of chronic renal wasting of magnesium and calcium together with defective renal salt handling. The protein encoded by this gene interacts with another family member, Claudin 16, and their interaction is required for their assembly into tight junctions and for renal reabsorption of magnesium. This protein is a constituent of tight junctions in the Schwann cells of peripheral myelinated nerves and the gene deficiency affects the nerve conduction of peripheral myelinated fibers. Alternatively spliced transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Aug 2010] | 4 | 119112638 | 119119635 | Mouse | 122 | symbol , PhenoGen | gene, protein-coding, REVIEWED [RefSeq] |
| 1558320 | Cldn2 | claudin 2 | This gene encodes a member of the claudin family. Claudins are integral membrane proteins and components of tight junction strands. Tight junction strands serve as a physical barrier to prevent solutes and water from passing freely through the paracellular space between epithelial or endothelial cel l sheets, and also play critical roles in maintaining cell polarity and signal transductions. The knockout mice lacking this gene display normal appearance, activity, growth and behavior, but are defective in the leaky and cation-selective paracellular permeability properties of renal proximal tubules. The proteins encoded by this gene and another family member Cldn12 are also critical for vitamin D-dependent Ca2+ absorption between enterocytes. [provided by RefSeq, Aug 2010] | X | 138701552 | 138712135 | Mouse | 232 | description | gene, protein-coding, REVIEWED [RefSeq] |
