Structural maintenance of chromosomes (SMC) complexes such as condensin regulate chromosome organization by extruding loops. A new study uses single-molecule imaging of condensin on supercoiled DNA to understand how condensins navigate the under- and overwound DNA states common throughout the genome.
References
Kim, Y., Shi, Z., Zhang, H., Finkelstein, I. J. & Yu, H. Science 366, 1345–1349 (2019).
Golfier, S., Quail, T., Kimura, H. & Brugués, J. eLife 9, e53885 (2020).
Davidson, I. F. et al. Science 366, 1338–1345 (2019).
Ganji, M. et al. Science 360, 102–105 (2018).
Yu, H. & Dröge, P. Trends Biochem. Sci. 39, 219–220 (2014).
Naughton, C. et al. Nat. Struct. Mol. Biol. 20, 387–395 (2013).
Teves, S. S. & Henikoff, S. Nat. Struct. Mol. Biol. 21, 88–94 (2014).
Kim, E., Gonzalez, A. M., Pradhan, B., van der Torre, J. & Dekker, C. Nat. Struct. Mol. Biol. https://doi.org/10.1038/s41594-022-00802-x (2022).
Hirota, T., Gerlich, D., Koch, B., Ellenberg, J. & Peters, J.-M. J. Cell Sci. 117, 6435–6445 (2004).
Sun, M., Nishino, T. & Marko, J. F. Nucleic Acids Res. 41, 6149–6160 (2013).
Eeftens, J. M. et al. EMBO J. 36, 3448–3457 (2017).
Bazett-Jones, D. P., Kimura, K. & Hirano, T. Mol. Cell 9, 1183–1190 (2002).
Kimura, K. & Hirano, T. Cell 90, 625–634 (1997).
Tokunaga, M., Imamoto, N. & Sakata-Sogawa, K. Nat. Methods 5, 159–161 (2008).
Gabriele, M. et al. Science 376, 496–501 (2022).
Acknowledgements
We thank S. Vos and S. Nemsick for insightful comments on this piece. D.N.N. and A.S.H. are supported by the Broad Institute of MIT and Harvard. A.S.H. additionally acknowledges support from US National Institutes of Health grants R00GM130896, DP2GM140938, R33CA257878 and UM1HG011536, National Science Foundation grant 2036037, the Mathers Foundation and a Pew-Stewart Cancer Research Scholar grant.
Author information
Authors and Affiliations
Corresponding author
Ethics declarations
Competing interests
The authors declare no competing interests.
Rights and permissions
About this article
Cite this article
Narducci, D.N., Hansen, A.S. Reeling it in: how DNA topology drives loop extrusion by condensin. Nat Struct Mol Biol 29, 623–625 (2022). https://doi.org/10.1038/s41594-022-00805-8
Published:
Issue Date:
DOI: https://doi.org/10.1038/s41594-022-00805-8
- Springer Nature America, Inc.