Balanced Branching in Transcription Termination

Details Balanced Branching in Transcription Termination Balanced Branching in Transcription Termination

2000-09-13

arxiv.org/abs/physics/0009048v1

Physics

Biological Physics

8 pages of RevTeX, 2 eps figures

Scientific paper

10.1073/pnas.240431598

The theory of stochastic transcription termination based on free-energy competition requires two or more reaction rates to be delicately balanced over a wide range of physical conditions. A large body of work on glasses and large molecules suggests that this should be impossible in such a large system in the absence of a new organizing principle of matter. We review the experimental literature of termination and find no evidence for such a principle but many troubling inconsistencies, most notably anomalous memory effects. These suggest that termination has a deterministic component and may conceivably be not stochastic at all. We find that a key experiment by Wilson and von Hippel allegedly refuting deterministic termination was an incorrectly analyzed regulatory effect of Mg2+ binding.

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