Julie Nonnekens, Stéphanie Cabantous, Joris Slingerland, Pierre-Olivier Mari, Giuseppina Giglia-Mari
CNRS, IPBS, 205 route de Narbonne, 31077 Toulouse, France.
Journal of cell science 2013 Aug 1Trichothiodystrophy group A (TTD-A) patients carry a mutation in the transcription factor II H (TFIIH) subunit TTDA. Using a novel in vivo tripartite split-GFP system, we show that TTDA interacts with the TFIIH subunit p52 and the p52-TTDA-GFP product is incorporated into TFIIH. p52-TTDA-GFP is able to bind DNA and is recruited to UV-damaged DNA. Furthermore, we show that two patient-mutated TTDA proteins can interact with p52, are able to bind to the DNA and can localize to damaged DNA. Our findings give new insights into the behavior of TTDA within the context of a living cell and thereby shed light on the complex phenotype of TTD-A patients.
Julie Nonnekens, Stéphanie Cabantous, Joris Slingerland, Pierre-Olivier Mari, Giuseppina Giglia-Mari. In vivo interactions of TTDA mutant proteins within TFIIH. Journal of cell science. 2013 Aug 1;126(Pt 15):3278-83
PMID: 23729738
View Full Text