DFG Research Unit FOR 721/2
Molecular Structure and Function of the Tight Junction
  Project 3   

Otmar Huber, Prof. PhD1,(2) 
1Dept. of Biochemistry II, University Jena

Rudolf Tauber, Prof. MD2 

2Central Institute of Laboratory Medicine and Pathobiochemistry,
Campus Benjamin Franklin, Charité, Freie Universität and Humboldt-Universität, Berlin

Posttranslational modulation of the structure and function of the tight junction

The maintenance of tight junction structure is of central importance for the barrier function and polarity of epithelial and endothelial cell layers. Impaired tight junction function has been reported in inflammatory bowel disease or kidney disease as well as damage to the blood-brain barrier. Posttranslational modifications play an important rolein the regulation of tight junction structure and function.

In this context, the functional role of ubiquitination for the stability of tricellulin is investigated. In addition, the amino acids modified by ubiquitination will be determined and then mutated. Thee influence of the mutation on the tight junction structure and function will be studied as well as the regulatory mechanisms that will affect the underlying ubiquitination.

In the second part of the project, the nuclear role of the tight junction protein ZO-2 adapter in the regulation of beta-catenin-mediated transcription will be elucidated and characterized. This includies studies of the mechanisms of the nuclear translocation of ZO-2.

 

Granted by project 3

Coworker

Publications 2010 -2012 (FOR 721/2)

2013

2012

2010 - 2011

Doctoral thesis

Award

 

 Publications 2007 - 2009 (FOR 721/1)

Previous work