Reactome: A Curated Pathway Database

Recovery of RNA synthesis after TC-NER

Stable Identifier
R-HSA-6782234
Type
Reaction [BlackBoxEvent]
Species
Homo sapiens
Compartment
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Summation

After DNA repair synthesis is completed at transcription-coupled nucleotide excision repair (TC-NER) sites, transcription resumes. A number of factors have been implicated in this process. ERCC6 (CSB) contains an ubiquitin-binding domain that is indispensable for its function in TC-NER and the restoration of damage-inhibited RNA synthesis (Anindya et al. 2010). The ubiquitin ligase activity of the ERCC8:DDB1:CUL4:RBX1 complex plays an important role in termination of TC-NER, possibly by targeting ERCC6 or its ubiquitinated partner for degradation and promoting dissociation of repair factors from the RNA polymerase II complex (Groisman et al. 2006, Vermeulen and Fousteri 2013). The ubiquitin protease complex composed of UVSSA and USP7 is also implicated in the recovery of RNA synthesis (RRS) (Nakazawa et al. 2012, Scwertman et al. 2012, Zhang et al. 2012, Fei and Chen 2012). ELL protein, recruited to the TFIIH complex, possibly as a component of the little elongation complex, is needed for RRS (Mourgues et al. 2013). Furthermore, histone chaperone FACT promotes accelerated histone exchange at TC-NER sites, allowing efficient progression of TC-NER and restoration of RNA synthesis after the repair of transcription blocking damages is completed (Dinant et al. 2013).

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