RNA Polymerase Collision versus DNA Structural Distortion: Twists and Turns Can Cause Break Failure.
2016
The twisting of DNA due to the movement of RNA polymerases is the basis of numerous classic experiments in molecular biology. Recent mouse genetic models indicate that chromosomal breakage is common at sites of transcriptional turbulence. Two key studies on this point mapped breakpoints to sites of either convergent or divergent transcription but arrived at different conclusions as to which is more detrimental and why. The issue hinges on whether DNA strand separation is the basis for the chromosomal instability or collision of RNA polymerases.
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