CLDN23 (claudin 23)

Gene

• Entrez ID: 137075
• Gene name: Claudin 23
• Gene symbol: CLDN23
• Synonyms (NCBI Gene): CLDNL, hCG1646163
• Chromosome: 8
• Chromosome location: 8p23.1
• Summary: 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 paracellula

miRNA

miRTarBase ID	miRNA	Experiments	Reference
MIRT046704	hsa-miR-222-3p	CLASH	23622248
MIRT045021	hsa-miR-186-5p	CLASH	23622248
MIRT895346	hsa-miR-105	CLIP-seq
MIRT895347	hsa-miR-3658	CLIP-seq
MIRT895348	hsa-miR-4693-3p	CLIP-seq
MIRT895349	hsa-miR-4696	CLIP-seq
MIRT895350	hsa-miR-4715-3p	CLIP-seq
MIRT895351	hsa-miR-4757-5p	CLIP-seq
MIRT895352	hsa-miR-526b	CLIP-seq
MIRT895353	hsa-miR-587	CLIP-seq
MIRT895354	hsa-miR-760	CLIP-seq
MIRT1546456	hsa-miR-1289	CLIP-seq
MIRT1546457	hsa-miR-133a	CLIP-seq
MIRT1546458	hsa-miR-133b	CLIP-seq
MIRT2201433	hsa-miR-1255a	CLIP-seq
MIRT2201434	hsa-miR-1255b	CLIP-seq
MIRT2201435	hsa-miR-3186-5p	CLIP-seq
MIRT2201436	hsa-miR-3197	CLIP-seq

Gene ontology (GO)

GO ID	Ontology	Definition	Evidence	Reference
GO:0005198	Function	Structural molecule activity	IEA
GO:0005515	Function	Protein binding	IPI	32296183
GO:0005886	Component	Plasma membrane	IBA
GO:0005886	Component	Plasma membrane	IEA
GO:0005923	Component	Bicellular tight junction	IBA
GO:0005923	Component	Bicellular tight junction	IEA
GO:0005923	Component	Bicellular tight junction	ISS
GO:0007155	Process	Cell adhesion	IBA
GO:0016020	Component	Membrane	IEA
GO:0016338	Process	Calcium-independent cell-cell adhesion via plasma membrane cell-adhesion molecules	ISS
GO:0042802	Function	Identical protein binding	ISS
GO:0070161	Component	Anchoring junction	IEA
GO:0070830	Process	Bicellular tight junction assembly	IBA

Other IDs

• MIM: 609203
• HGNC: 17591
• e!Ensembl: ENSG00000253958

Protein

• UniProt ID: Q96B33
• Protein name: Claudin-23
• Protein function: Plays a major role in tight junction-specific obliteration of the intercellular space, through calcium-independent cell-adhesion activity.
• Family and domains:

  Pfam

  Accession	ID	Position in sequence	Description	Type
  PF00822	PMP22_Claudin	3 → 177	PMP-22/EMP/MP20/Claudin family	Family

• Tissue specificity: TISSUE SPECIFICITY: Expressed in germinal center B-cells, placenta, stomach as well as in colon tumor. {ECO:0000269|PubMed:12736707}.
• Sequence:

  MRTPVVMTLGMVLAPCGLLLNLTGTLAPGWRLVKGFLNQPVDVELYQGLWDMCREQSSRE
  RECGQTDQWGYFEAQPVLVARALMVTSLAATVLGLLLASLGVRCWQDEPNFVLAGLSGVV
  LFVAGLLGLIPVSWYNHFLGDRDVLPAPASPVTVQVSYSLVLGYLGSCLLLLGGFSLALS
  FAPWCDERCRRRRKGPSAGPRRSSVSTIQVEWPEPDLAPAIKYYSDGQHRPPPAQHRKPK
  PKPKVGFPMPRPRPKAYTNSVDVLDGEGWESQDAPSCSTHPCDSSLPCDSDL

• Sequence length: 292

Pathways

KEGG:

Virion - Hepatitis viruses
Cell adhesion molecules
Tight junction
Leukocyte transendothelial migration
Pathogenic Escherichia coli infection
Hepatitis C

Associated diseases

Evidence Score:

• ★☆☆☆☆  Gene-disease association found in Text Mining only
• ★★☆☆☆  Found in Text Mining and Unknown/Other Associations
• ★★★☆☆  Reported in Unknown/Other Associations across ≥2 Sources
• ★★★★☆  ClinVar: Pathogenic/Likely Pathogenic (<5 Variants)
• ★★★★★  ClinVar: Pathogenic/Likely Pathogenic (≥5 Variants)

Unknown / Other Associations
Phenotype Name	Clinical Significance	Source	Evidence Score
ASTHMA	—	GWAS catalog	★★☆☆☆ Found in Text Mining + Unknown/Other Associations
CENTRAL NERVOUS SYSTEM INFECTION	—	GWAS catalog	★★☆☆☆ Found in Text Mining + Unknown/Other Associations
CORONARY ARTERY DISEASE	—	GWAS catalog	★★☆☆☆ Found in Text Mining + Unknown/Other Associations
ENDOMETRIOSIS	—	GWAS catalog	★★☆☆☆ Found in Text Mining + Unknown/Other Associations
GOUT	—	GWAS catalog	★★☆☆☆ Found in Text Mining + Unknown/Other Associations
MAJOR DEPRESSIVE DISORDER	—	GWAS catalog	★★☆☆☆ Found in Text Mining + Unknown/Other Associations
NEUROTIC DISORDER	—	GWAS catalog	★★☆☆☆ Found in Text Mining + Unknown/Other Associations
OBESITY	—	GWAS catalog	★★☆☆☆ Found in Text Mining + Unknown/Other Associations
OSTEOARTHRITIS, HIP	—	GWAS catalog	★★☆☆☆ Found in Text Mining + Unknown/Other Associations
OSTEOARTHRITIS, KNEE	—	GWAS catalog	★★☆☆☆ Found in Text Mining + Unknown/Other Associations
OTOSCLEROSIS	—	GWAS catalog	★★☆☆☆ Found in Text Mining + Unknown/Other Associations
PROSTATE CANCER	—	GWAS catalog	★★☆☆☆ Found in Text Mining + Unknown/Other Associations
PROSTATE CARCINOMA	—	GWAS catalog	★★☆☆☆ Found in Text Mining + Unknown/Other Associations
SYSTEMIC LUPUS ERYTHEMATOSUS	—	GWAS catalog	★★☆☆☆ Found in Text Mining + Unknown/Other Associations
TYPE 2 DIABETES MELLITUS	—	GWAS catalog	★★☆☆☆ Found in Text Mining + Unknown/Other Associations

Associations from Text Mining
Disease Name	Relationship Type	References	Evidence Score
Colorectal Neoplasms	Associate	31612869, 31893510	★☆☆☆☆ Found in Text Mining only
Dermatitis Atopic	Associate	21163515, 31596431	★☆☆☆☆ Found in Text Mining only
Eczema	Associate	31596431	★☆☆☆☆ Found in Text Mining only
Gastritis	Stimulate	28350854	★☆☆☆☆ Found in Text Mining only
Gastritis Atrophic	Inhibit	28350854	★☆☆☆☆ Found in Text Mining only
Lupus Erythematosus Systemic	Associate	28289186	★☆☆☆☆ Found in Text Mining only
Neoplasms	Associate	28350854	★☆☆☆☆ Found in Text Mining only
Pruritus	Associate	31596431	★☆☆☆☆ Found in Text Mining only
Rectal Neoplasms	Inhibit	33327880	★☆☆☆☆ Found in Text Mining only
Squamous Cell Carcinoma of Head and Neck	Associate	35945754	★☆☆☆☆ Found in Text Mining only
Stomach Diseases	Associate	28350854	★☆☆☆☆ Found in Text Mining only
Stomach Neoplasms	Associate	28350854	★☆☆☆☆ Found in Text Mining only
Stroke	Associate	37813584	★☆☆☆☆ Found in Text Mining only