Crystal structure of the Rous sarcoma virus intasome
Abstract
Integration of the reverse-transcribed viral DNA into the host genome is an essential step in the life cycle of retroviruses. Retrovirus integrase catalyses insertions of both ends of the linear viral DNA into a host chromosome. Integrase from HIV-1 and closely related retroviruses share the three-domain organization, consisting of a catalytic core domain flanked by amino- and carboxy-terminal domains essential for the concerted integration reaction. Although structures of the tetrameric integrase–DNA complexes have been reported for integrase from prototype foamy virus featuring an additional DNA-binding domain and longer interdomain linkers, the architecture of a canonical three-domain integrase bound to DNA remained elusive. In this paper, we report a crystal structure of the three-domain integrase from Rous sarcoma virus in complex with viral and target DNAs. The structure shows an octameric assembly of integrase, in which a pair of integrase dimers engage viral DNA ends for catalysis while another pair of non-catalytic integrase dimers bridge between the two viral DNA molecules and help capture target DNA. The individual domains of the eight integrase molecules play varying roles to hold the complex together, making an extensive network of protein–DNA and protein–protein contacts that show both conserved and distinct features compared with thosemore »
- Authors:
-
- Univ. of Minnesota, Minneapolis, MN (United States). Dept. of Biochemistry, Molecular Biology and Biophysics. Inst. for Molecular Virology. Masonic Cancer Center
- Cornell Univ., Lemont, IL (United States). Advanced Photon Source. Northeastern Collaborative Access Team
- Saint Louis Univ., St. Louis, MO (United States). Health Sciences Center. Inst. for Molecular Virology
- Publication Date:
- Research Org.:
- Univ. of Minnesota, Minneapolis, MN (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC); National Inst. of Health (NIH) (United States)
- Contributing Org.:
- Cornell Univ., Lemont, IL (United States). Advanced Photon Source; Saint Louis Univ., St. Louis, MO (United States)
- OSTI Identifier:
- 1239418
- Grant/Contract Number:
- AC02-06CH11357; P41 GM103403; GM109770; AI087098; AI100682
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Nature (London)
- Additional Journal Information:
- Journal Name: Nature (London); Journal Volume: 530; Journal Issue: 7590; Journal ID: ISSN 0028-0836
- Publisher:
- Nature Publishing Group
- Country of Publication:
- United States
- Language:
- ENGLISH
- Subject:
- 59 BASIC BIOLOGICAL SCIENCES; X-ray crystallography; Retrovirus; DNA; DNA-binding proteins
Citation Formats
Yin, Zhiqi, Shi, Ke, Banerjee, Surajit, Pandey, Krishan K., Bera, Sibes, Grandgenett, Duane P., and Aihara, Hideki. Crystal structure of the Rous sarcoma virus intasome. United States: N. p., 2016.
Web. doi:10.1038/nature16950.
Yin, Zhiqi, Shi, Ke, Banerjee, Surajit, Pandey, Krishan K., Bera, Sibes, Grandgenett, Duane P., & Aihara, Hideki. Crystal structure of the Rous sarcoma virus intasome. United States. https://doi.org/10.1038/nature16950
Yin, Zhiqi, Shi, Ke, Banerjee, Surajit, Pandey, Krishan K., Bera, Sibes, Grandgenett, Duane P., and Aihara, Hideki. Wed .
"Crystal structure of the Rous sarcoma virus intasome". United States. https://doi.org/10.1038/nature16950. https://www.osti.gov/servlets/purl/1239418.
@article{osti_1239418,
title = {Crystal structure of the Rous sarcoma virus intasome},
author = {Yin, Zhiqi and Shi, Ke and Banerjee, Surajit and Pandey, Krishan K. and Bera, Sibes and Grandgenett, Duane P. and Aihara, Hideki},
abstractNote = {Integration of the reverse-transcribed viral DNA into the host genome is an essential step in the life cycle of retroviruses. Retrovirus integrase catalyses insertions of both ends of the linear viral DNA into a host chromosome. Integrase from HIV-1 and closely related retroviruses share the three-domain organization, consisting of a catalytic core domain flanked by amino- and carboxy-terminal domains essential for the concerted integration reaction. Although structures of the tetrameric integrase–DNA complexes have been reported for integrase from prototype foamy virus featuring an additional DNA-binding domain and longer interdomain linkers, the architecture of a canonical three-domain integrase bound to DNA remained elusive. In this paper, we report a crystal structure of the three-domain integrase from Rous sarcoma virus in complex with viral and target DNAs. The structure shows an octameric assembly of integrase, in which a pair of integrase dimers engage viral DNA ends for catalysis while another pair of non-catalytic integrase dimers bridge between the two viral DNA molecules and help capture target DNA. The individual domains of the eight integrase molecules play varying roles to hold the complex together, making an extensive network of protein–DNA and protein–protein contacts that show both conserved and distinct features compared with those observed for prototype foamy virus integrase. Finally, our work highlights the diversity of retrovirus intasome assembly and provides insights into the mechanisms of integration by HIV-1 and related retroviruses.},
doi = {10.1038/nature16950},
journal = {Nature (London)},
number = 7590,
volume = 530,
place = {United States},
year = {Wed Feb 17 00:00:00 EST 2016},
month = {Wed Feb 17 00:00:00 EST 2016}
}
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Figures / Tables:
Extended Data Figure 1: Amino acid sequence alignment of RSV, HIV-1, and PFV INs The secondary structure elements for RSV IN are color-coded based on the three IN domains similarly to Fig. 1a. The residue numbering at the top is for RSV IN. For each IN, the black dotsmore »
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