The Transcriptional Repressor Domain of Gli3 is Intrinsically Disordered

Overview

Journal PLoS One

Specialties General Medicine
Science

Date 2013 Oct 23

PMID 24146948

Citations 4

Authors

Robert Tsanev

Kalju Vanatalu

Juri Jarvet

Risto Tanner

Kristi Laur

Piret Tiigimagi

Birthe B Kragelund

Torben Osterlund

Priit Kogerman

Affiliations

Soon will be listed here.

Abstract

The transcription factor Gli3 is acting mainly as a transcriptional repressor in the Sonic hedgehog signal transduction pathway. Gli3 contains a repressor domain in its N-terminus from residue G106 to E236. In this study we have characterized the intracellular structure of the Gli3 repressor domain using a combined bioinformatics and experimental approach. According to our findings the Gli3 repressor domain while being intrinsically disordered contains predicted anchor sites for partner interactions. The obvious interaction partners to test were Ski and DNA; however, with both of these the structure of Gli3 repressor domain remained disordered. To locate residues important for the repressor function we mutated several residues within the Gli3 repressor domain. Two of these, H141A and H157N, targeting predicted helical regions, significantly decreased transcriptional repression and thus identify important functional parts of the domain.

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