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Structure of the single-stranded-DNA-binding domain of replication protein A bound to DNA

Author

Listed:
  • Alexey Bochkarev

    (McMaster University)

  • Richard A. Pfuetzner

    (McMaster University)

  • Aled M. Edwards

    (McMaster University)

  • Lori Frappier

    (McMaster University)

Abstract

THE single-stranded-DNA-binding proteins (SSBs) are essential for DNA function in prokaryotic and eukaryotic cells, mitochondria, phages and viruses1,2. The structures of four SSBs have been solved3–7, but the molecular details of the interaction of SSBs with DNA remain speculative. We report here the crystal structure at 2.4 Å resolution of the single-stranded-DNA-binding domain of human replication protein A (RPA) bound to DNA. Replication protein A is a heterotrimeric SSB that is highly conserved in eukaryotes. The largest subunit, RPA70, binds to single-stranded (ss)DNA8,9 and mediates interactions with many cellular and viral proteins10. The DNA-binding domain, which lies in the middle of RPA70, comprises two structurally homologous sub-domains oriented in tandem. The ssDNA lies in a channel that extends from one subdomain to the other. The structure of each RPA70 subdomain is similar to those of the bacteriophage SSBs, indicating that the mechanism of ssDNA-binding is conserved.

Suggested Citation

  • Alexey Bochkarev & Richard A. Pfuetzner & Aled M. Edwards & Lori Frappier, 1997. "Structure of the single-stranded-DNA-binding domain of replication protein A bound to DNA," Nature, Nature, vol. 385(6612), pages 176-181, January.
    • Handle: RePEc:nat:nature:v:385:y:1997:i:6612:d:10.1038_385176a0
    DOI: 10.1038/385176a0
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    Cited by:

    1. Poonam Roshan & Sahiti Kuppa & Jenna R. Mattice & Vikas Kaushik & Rahul Chadda & Nilisha Pokhrel & Brunda R. Tumala & Aparna Biswas & Brian Bothner & Edwin Antony & Sofia Origanti, 2023. "An Aurora B-RPA signaling axis secures chromosome segregation fidelity," Nature Communications, Nature, vol. 14(1), pages 1-19, December.
    2. Aditi Mukherjee & Zakir Hossain & Esteban Erben & Shuai Ma & Jun Yong Choi & Hee-Sook Kim, 2023. "Identification of a small-molecule inhibitor that selectively blocks DNA-binding by Trypanosoma brucei replication protein A1," Nature Communications, Nature, vol. 14(1), pages 1-19, December.
    3. Seong-Su Han & Kuo-Kuang Wen & María L. García-Rubio & Marc S. Wold & Andrés Aguilera & Wojciech Niedzwiedz & Yatin M. Vyas, 2022. "WASp modulates RPA function on single-stranded DNA in response to replication stress and DNA damage," Nature Communications, Nature, vol. 13(1), pages 1-15, December.
    4. Sahiti Kuppa & Jaigeeth Deveryshetty & Rahul Chadda & Jenna R. Mattice & Nilisha Pokhrel & Vikas Kaushik & Angela Patterson & Nalini Dhingra & Sushil Pangeni & Marisa K. Sadauskas & Sajad Shiekh & Ham, 2022. "Rtt105 regulates RPA function by configurationally stapling the flexible domains," Nature Communications, Nature, vol. 13(1), pages 1-16, December.

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