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Replication fork protection factors controlling R-loop bypass and supression.

Posted January 20, 2017 | Publications

Chang EY & Stirling PC. Replication fork protection factors controlling R-loop bypass and suppression. Genes (Basel) 8: pii: E33. doi: 10.3390/genes8010033, 2017


Replication-transcription conflicts have been a well-studied source of genome instability for many years and have frequently been linked to defects in RNA processing. However, recent characterization of replication fork-associated proteins has revealed that defects in fork protection can directly or indirectly stabilize R-loop structures in the genome and promote transcription-replication conflicts that lead to genome instability. Defects in essential DNA replication-associated activities like topoisomerase, or the minichromosome maintenance (MCM) helicase complex, as well as fork-associated protection factors like the Fanconi anemia pathway, both appear to mitigate transcription-replication conflicts. Here, we will highlight recent advances that support the concept that normal and robust replisome function itself is a key component of mitigating R-loop coupled genome instability.