Tight junction protein 2

Tight junction protein 2 (zona occludens 2)
PDB rendering based on 2csj.
Available structures PDB 2OSG, 3E17
Identifiers
Symbols	TJP2; MGC26306; X104; ZO2
External IDs	OMIM: 607709 MGI: 1341872 HomoloGene: 3541 GeneCards: TJP2 Gene
Gene Ontology Molecular function • guanylate kinase activity • protein binding Cellular component • nucleus • cytoplasm • plasma membrane • plasma membrane • adherens junction • tight junction • cell junction Biological process • apoptosis • cellular component disassembly involved in apoptosis Sources: Amigo / QuickGO
RNA expression pattern
More reference expression data
Orthologs
Species	Human	Mouse
Entrez	9414	21873
Ensembl	ENSG00000119139	ENSMUSG00000024812
UniProt	Q9UDY2	Q9Z0U1
RefSeq (mRNA)	NM_001170414.1	NM_011597
RefSeq (protein)	NP_001163885.1	NP_035727
Location (UCSC)	Chr 9: 71.74 – 71.87 Mb	Chr 19: 24.17 – 24.3 Mb
PubMed search	[1]	[2]

Tight junction protein ZO-2 is a protein that in humans is encoded by the TJP2 gene.

Tight junction proteins (TJPs) belong to a family of membrane-associated guanylate kinase (MAGUK) homologs that are involved in the organization of epithelial and endothelial intercellular junctions. TJPs bind to the cytoplasmic C termini of junctional transmembrane proteins and link them to the actin cytoskeleton.[supplied by OMIM]

Interactions

Tight junction protein 2 has been shown to interact with Tight junction protein 1, Band 4.1 and Occludin.

Further reading

• Denker BM, Nigam SK (1998). "Molecular structure and assembly of the tight junction". Am. J. Physiol. 274 (1 Pt 2): F1–9. PMID 9458817. 
• González-Mariscal L, Betanzos A, Avila-Flores A (2000). "MAGUK proteins: structure and role in the tight junction". Semin. Cell Dev. Biol. 11 (4): 315–324. doi:10.1006/scdb.2000.0178. PMID 10966866. 
• King JE, Eugenin EA, Buckner CM, Berman JW (2006). "HIV tat and neurotoxicity". Microbes Infect. 8 (5): 1347–1357. doi:10.1016/j.micinf.2005.11.014. PMID 16697675. 
• Van Itallie CM, Balda MS, Anderson JM (1995). "Epidermal growth factor induces tyrosine phosphorylation and reorganization of the tight junction protein ZO-1 in A431 cells". J. Cell. Sci. 108 (4): 1735–42. PMID 7542259. 
• Beatch M, Jesaitis LA, Gallin WJ et al (1996). "The tight junction protein ZO-2 contains three PDZ (PSD-95/Discs-Large/ZO-1) domains and an alternatively spliced region". J. Biol. Chem. 271 (42): 25723–25726. doi:10.1074/jbc.271.42.25723. PMID 8824195. 
• Itoh M, Morita K, Tsukita S (1999). "Characterization of ZO-2 as a MAGUK family member associated with tight as well as adherens junctions with a binding affinity to occludin and alpha catenin". J. Biol. Chem. 274 (9): 5981–5986. doi:10.1074/jbc.274.9.5981. PMID 10026224. 
• Chlenski A, Ketels KV, Tsao MS et al (1999). "Tight junction protein ZO-2 is differentially expressed in normal pancreatic ducts compared to human pancreatic adenocarcinoma". Int. J. Cancer 82 (1): 137–144. doi:10.1002/(SICI)1097-0215(19990702)82:1<137::AID-IJC23>3.0.CO;2-F. PMID 10360833. 
• Chlenski A, Ketels KV, Engeriser JL et al (1999). "zo-2 gene alternative promoters in normal and neoplastic human pancreatic duct cells". Int. J. Cancer 83 (3): 349–358. doi:10.1002/(SICI)1097-0215(19991029)83:3<349::AID-IJC10>3.0.CO;2-C. PMID 10495427. 
• Wittchen ES, Haskins J, Stevenson BR (2000). "Protein interactions at the tight junction. Actin has multiple binding partners, and ZO-1 forms independent complexes with ZO-2 and ZO-3". J. Biol. Chem. 274 (49): 35179–35185. doi:10.1074/jbc.274.49.35179. PMID 10575001. 
• Itoh M, Furuse M, Morita K et al (2000). "Direct binding of three tight junction-associated MAGUKs, ZO-1, ZO-2, and ZO-3, with the COOH termini of claudins". J. Cell Biol. 147 (6): 1351–1363. doi:10.1083/jcb.147.6.1351. PMC 2168087. PMID 10601346. http://www.pubmedcentral.nih.gov/articlerender.fcgi?tool=pmcentrez&artid=2168087. 
• Cordenonsi M, D'Atri F, Hammar E et al (2000). "Cingulin contains globular and coiled-coil domains and interacts with ZO-1, ZO-2, ZO-3, and myosin". J. Cell Biol. 147 (7): 1569–1582. doi:10.1083/jcb.147.7.1569. PMC 2174252. PMID 10613913. http://www.pubmedcentral.nih.gov/articlerender.fcgi?tool=pmcentrez&artid=2174252. 
• Mattagajasingh SN, Huang SC, Hartenstein JS, Benz EJ (2000). "Characterization of the interaction between protein 4.1R and ZO-2. A possible link between the tight junction and the actin cytoskeleton". J. Biol. Chem. 275 (39): 30573–30585. doi:10.1074/jbc.M004578200. PMID 10874042. 
• Chlenski A, Ketels KV, Korovaitseva GI et al (2000). "Organization and expression of the human zo-2 gene (tjp-2) in normal and neoplastic tissues". Biochim. Biophys. Acta 1493 (3): 319–24. doi:10.1016/S0167-4781(00)00185-8. PMID 11018256. 
• Citi S, D'Atri F, Parry DA (2000). "Human and Xenopus cingulin share a modular organization of the coiled-coil rod domain: predictions for intra- and intermolecular assembly". J. Struct. Biol. 131 (2): 135–145. doi:10.1006/jsbi.2000.4284. PMID 11042084. 
• Hartley JL, Temple GF, Brasch MA (2001). "DNA cloning using in vitro site-specific recombination". Genome Res. 10 (11): 1788–1795. doi:10.1101/gr.143000. PMC 310948. PMID 11076863. http://www.pubmedcentral.nih.gov/articlerender.fcgi?tool=pmcentrez&artid=310948. 
• Glaunsinger BA, Weiss RS, Lee SS, Javier R (2001). "Link of the unique oncogenic properties of adenovirus type 9 E4-ORF1 to a select interaction with the candidate tumor suppressor protein ZO-2". EMBO J. 20 (20): 5578–5586. doi:10.1093/emboj/20.20.5578. PMC 125668. PMID 11598001. http://www.pubmedcentral.nih.gov/articlerender.fcgi?tool=pmcentrez&artid=125668. 
• Islas S, Vega J, Ponce L, González-Mariscal L (2002). "Nuclear localization of the tight junction protein ZO-2 in epithelial cells". Exp. Cell Res. 274 (1): 138–148. doi:10.1006/excr.2001.5457. PMID 11855865.