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Tight junction - Taeniopygia guttata


Model information
Identifier: BMID000000016098
Format: SBML L3 V1 (Layout, Qualitative Models)
Project: path2models
Categories: non-metabolic
Submission: 17 May 2012 16:39:53 UTC
Last modified: 08 Dec 2012 02:40:03 UTC
Published: 19 May 2012 23:49:21 UTC
isDescribedBy tight junction Gene Ontology
occursIn Taeniopygia guttata Taxonomy
isDerivedFrom Tight junction KEGG Pathway
Model of “Tight junction” in “Taeniopygia guttata (zebra finch)”
Epithelial tight junctions (TJs) are composed of at least three types of transmembrane protein -occludin, claudin and junctional adhesion molecules (JAMs)- and a cytoplasmic 'plaque' consisting of many different proteins that form large complexes. The transmembrane proteins mediate cell adhesion and are thought to constitute the intramembrane and paracellular diffusion barriers. The cytoplasmic 'plaque' contains three major multi-protein complexes consisting largely of scaffolding proteins, the ZO protein complex, the CRB3-Pals1-PATJ complex and the PAR-3-aPKC-PAR-6 complex. The ZO protein complex appears to organize the transmembrane proteins and couple them to other cytoplasmic proteins and to actin microfilaments. Two evolutionarily conserved protein complexes, the CRB3 and PAR complexes are involved in the establishment and maintenance of epithelial cell polarity. Besides these three protein complexes which seem to be constitutively associated at TJs, a number of proteins with different functions has been identified at TJs. These include additional scaffolding proteins like MUPP1 and MAGI-1, adaptor proteins, transcription regulators and RNA processing factors, regulatory proteins like small GTPases and G-proteins, kinases and phosphatases, and heat shock proteins. These are proposed to be involved in junction assembly, barrier regulation, gene transcription, and perhaps other, presently undefined pathways.

Graphical representation of 'Tight junction (Taeniopygia guttata (zebra finch))'
(PNG image hosted by the Kyoto Encyclopedia of Genes and Genomes, KEGG).
This model has been automatically generated by KEGGtranslator V2.3.0 (KEGGtranslator: visualizing and converting the KEGG PATHWAY database to various formats. Wrzodek C, Dräger A, Zell A. Bioinformatics . 2011, 27 :2314-2315) using information coming from the KEGG PATHWAY Database ( original pathway ).
This model has been produced by the path2models project, it is currently hosted on BioModels Database and identified by: BMID000000016098 .
To the extent possible under law, all copyright and related or neighbouring rights to this encoded model have been dedicated to the public domain worldwide. Please refer to CC0 Public Domain Dedication for more information.