Journal
PHYSICAL REVIEW E
Volume 86, Issue 2, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevE.86.021903
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Funding
- ANII, Agencia Nacional de Investigacion e Innovacion, Programa de Apoyo Sectorial a la Estrategia Nacional de Innovacion INNOVA URUGUAY [8 DCI-ALA/2007/19.040]
- CSIC-UdelaR
- National Scientific Program of ANII (SNI)
- Basic Science Development Program of Uruguay (PEDECIBA)
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Bending of the seemingly stiff DNA double helix is a fundamental physical process for any living organism. Specialized proteins recognize DNA inducing and stabilizing sharp curvatures of the double helix. However, experimental evidence suggests a high protein-independent flexibility of DNA. On the basis of coarse-grained simulations, we propose that DNA experiences thermally induced kinks associated with the spontaneous formation of internal bubbles. Comparison of the protein-induced DNA curvature calculated from the Protein Data Bank with that sampled by our simulations suggests that thermally induced distortions can account for similar to 80% of the DNA curvature present in experimentally solved structures.
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