edoc

Target of rapamycin (TOR) kinase in Trypanosoma brucei : an extended family

Saldivia, M. and Barquilla, A. and Bart, J. M. and Diaz-González, R. and Hall, M. N. and Navarro, M.. (2013) Target of rapamycin (TOR) kinase in Trypanosoma brucei : an extended family. Biochemical Society Transactions, 41 (4). pp. 934-938.

Full text not available from this repository.

Official URL: http://edoc.unibas.ch/dok/A6165092

Downloads: Statistics Overview

Abstract

The complex life cycle of Trypanosoma brucei provides an excellent model system to understand signalling pathways that regulate development. We described previously the classical functions of TOR (target of rapamycin) 1 and TOR2 in T. brucei. In a more recent study, we described a novel TOR kinase, named TOR4, which regulates differentiation from the proliferative infective form to the quiescent form. In contrast with TOR1 loss-of-function, down-regulation of TOR4 triggers an irreversible differentiation process through the development of the insect pre-adapted quiescent form. TOR4 governs a signalling pathway distinct from those controlled by the conventional TOR complexes TORC1 and TORC2. Depletion of TOR4 induces all well-known characteristics of the quiescent developmental stage in trypanosomes, including expression of the PAD (proteins associated with differentiation) surface proteins and transcriptional down-regulation of the VSG (variant surface glycoprotein) gene. TOR4 kinase forms a structurally and functionally distinct complex named TORC4. TOR4 associates with LST8 (lethal with sec-13 protein 8) and other factors including an armadillo-domain-containing protein and the major vault protein, which probably serves as a scaffold for this kinase. Research in T. brucei, a protozoan parasite that diverged from the eukaryotic tree early in evolution, may help to uncover new functions of TOR kinases.
Faculties and Departments:05 Faculty of Science > Departement Biozentrum > Growth & Development > Biochemistry (Hall)
UniBasel Contributors:Hall, Michael N.
Item Type:Article, refereed
Article Subtype:Research Article
Bibsysno:Link to catalogue
Publisher:Portland Press
ISSN:0300-5127
e-ISSN:1470-8752
Note:Publication type according to Uni Basel Research Database: Journal article
Related URLs:
Identification Number:
Last Modified:09 Nov 2017 09:37
Deposited On:13 Sep 2013 07:52

Repository Staff Only: item control page