NMR Structure and Dynamics of the C-Terminal Domain from Human Rev1 and Its Complex with Rev1 Interacting Region of DNA Polymerase η
Rev1 is a translesion synthesis (TLS) DNA polymerase essential for DNA damage tolerance in eukaryotes. In the process of TLS stalled high-fidelity replicative DNA polymerases are temporarily replaced by specialized TLS enzymes that can bypass sites of DNA damage (lesions), thus allowing replication...
| Principais autores: | , , , , , |
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| Formato: | Artigo |
| Idioma: | en_US |
| Publicado em: |
American Chemical Society (ACS)
2014
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| Acesso em linha: | http://hdl.handle.net/1721.1/85185 https://orcid.org/0000-0001-7243-8261 |
| _version_ | 1826203970907930624 |
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| author | Pozhidaeva, Alexandra Pustovalova, Yulia Bezsonova, Irina Walker, Graham C. Korzhnev, Dmitry M. D'Souza, Sanjay Victor |
| author2 | Massachusetts Institute of Technology. Department of Biology |
| author_facet | Massachusetts Institute of Technology. Department of Biology Pozhidaeva, Alexandra Pustovalova, Yulia Bezsonova, Irina Walker, Graham C. Korzhnev, Dmitry M. D'Souza, Sanjay Victor |
| author_sort | Pozhidaeva, Alexandra |
| collection | MIT |
| description | Rev1 is a translesion synthesis (TLS) DNA polymerase essential for DNA damage tolerance in eukaryotes. In the process of TLS stalled high-fidelity replicative DNA polymerases are temporarily replaced by specialized TLS enzymes that can bypass sites of DNA damage (lesions), thus allowing replication to continue or postreplicational gaps to be filled. Despite its limited catalytic activity, human Rev1 plays a key role in TLS by serving as a scaffold that provides an access of Y-family TLS polymerases polη, ι, and κ to their cognate DNA lesions and facilitates their subsequent exchange to polζ that extends the distorted DNA primer–template. Rev1 interaction with the other major human TLS polymerases, polη, ι, κ, and the regulatory subunit Rev7 of polζ, is mediated by Rev1 C-terminal domain (Rev1-CT). We used NMR spectroscopy to determine the spatial structure of the Rev1-CT domain (residues 1157–1251) and its complex with Rev1 interacting region (RIR) from polη (residues 524–539). The domain forms a four-helix bundle with a well-structured N-terminal β-hairpin docking against helices 1 and 2, creating a binding pocket for the two conserved Phe residues of the RIR motif that upon binding folds into an α-helix. NMR spin-relaxation and NMR relaxation dispersion measurements suggest that free Rev1-CT and Rev1-CT/polη-RIR complex exhibit μs-ms conformational dynamics encompassing the RIR binding site, which might facilitate selection of the molecular configuration optimal for binding. These results offer new insights into the control of TLS in human cells by providing a structural basis for understanding the recognition of the Rev1-CT by Y-family DNA polymerases. |
| first_indexed | 2024-09-23T12:46:47Z |
| format | Article |
| id | mit-1721.1/85185 |
| institution | Massachusetts Institute of Technology |
| language | en_US |
| last_indexed | 2024-09-23T12:46:47Z |
| publishDate | 2014 |
| publisher | American Chemical Society (ACS) |
| record_format | dspace |
| spelling | mit-1721.1/851852022-10-01T11:01:15Z NMR Structure and Dynamics of the C-Terminal Domain from Human Rev1 and Its Complex with Rev1 Interacting Region of DNA Polymerase η Pozhidaeva, Alexandra Pustovalova, Yulia Bezsonova, Irina Walker, Graham C. Korzhnev, Dmitry M. D'Souza, Sanjay Victor Massachusetts Institute of Technology. Department of Biology D'Souza, Sanjay Victor Walker, Graham C. Rev1 is a translesion synthesis (TLS) DNA polymerase essential for DNA damage tolerance in eukaryotes. In the process of TLS stalled high-fidelity replicative DNA polymerases are temporarily replaced by specialized TLS enzymes that can bypass sites of DNA damage (lesions), thus allowing replication to continue or postreplicational gaps to be filled. Despite its limited catalytic activity, human Rev1 plays a key role in TLS by serving as a scaffold that provides an access of Y-family TLS polymerases polη, ι, and κ to their cognate DNA lesions and facilitates their subsequent exchange to polζ that extends the distorted DNA primer–template. Rev1 interaction with the other major human TLS polymerases, polη, ι, κ, and the regulatory subunit Rev7 of polζ, is mediated by Rev1 C-terminal domain (Rev1-CT). We used NMR spectroscopy to determine the spatial structure of the Rev1-CT domain (residues 1157–1251) and its complex with Rev1 interacting region (RIR) from polη (residues 524–539). The domain forms a four-helix bundle with a well-structured N-terminal β-hairpin docking against helices 1 and 2, creating a binding pocket for the two conserved Phe residues of the RIR motif that upon binding folds into an α-helix. NMR spin-relaxation and NMR relaxation dispersion measurements suggest that free Rev1-CT and Rev1-CT/polη-RIR complex exhibit μs-ms conformational dynamics encompassing the RIR binding site, which might facilitate selection of the molecular configuration optimal for binding. These results offer new insights into the control of TLS in human cells by providing a structural basis for understanding the recognition of the Rev1-CT by Y-family DNA polymerases. National Institute of Environmental Health Sciences (ES015818) Massachusetts Institute of Technology. Center for Environmental Health Sciences (Grant P30 ES002109) 2014-02-28T16:21:40Z 2014-02-28T16:21:40Z 2012-06 2012-06 Article http://purl.org/eprint/type/JournalArticle 0006-2960 1520-4995 http://hdl.handle.net/1721.1/85185 Pozhidaeva, Alexandra, Yulia Pustovalova, Sanjay D’Souza, Irina Bezsonova, Graham C. Walker, and Dmitry M. Korzhnev. “NMR Structure and Dynamics of the C-Terminal Domain from Human Rev1 and Its Complex with Rev1 Interacting Region of DNA Polymerase η.” Biochemistry 51, no. 27 (July 10, 2012): 5506–5520. https://orcid.org/0000-0001-7243-8261 en_US http://dx.doi.org/10.1021/bi300566z Biochemistry Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use. application/pdf American Chemical Society (ACS) PMC |
| spellingShingle | Pozhidaeva, Alexandra Pustovalova, Yulia Bezsonova, Irina Walker, Graham C. Korzhnev, Dmitry M. D'Souza, Sanjay Victor NMR Structure and Dynamics of the C-Terminal Domain from Human Rev1 and Its Complex with Rev1 Interacting Region of DNA Polymerase η |
| title | NMR Structure and Dynamics of the C-Terminal Domain from Human Rev1 and Its Complex with Rev1 Interacting Region of DNA Polymerase η |
| title_full | NMR Structure and Dynamics of the C-Terminal Domain from Human Rev1 and Its Complex with Rev1 Interacting Region of DNA Polymerase η |
| title_fullStr | NMR Structure and Dynamics of the C-Terminal Domain from Human Rev1 and Its Complex with Rev1 Interacting Region of DNA Polymerase η |
| title_full_unstemmed | NMR Structure and Dynamics of the C-Terminal Domain from Human Rev1 and Its Complex with Rev1 Interacting Region of DNA Polymerase η |
| title_short | NMR Structure and Dynamics of the C-Terminal Domain from Human Rev1 and Its Complex with Rev1 Interacting Region of DNA Polymerase η |
| title_sort | nmr structure and dynamics of the c terminal domain from human rev1 and its complex with rev1 interacting region of dna polymerase η |
| url | http://hdl.handle.net/1721.1/85185 https://orcid.org/0000-0001-7243-8261 |
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