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He F, Bhoobalan-Chitty Y, Van LB, Kjeldsen AL, Dedola M, Makarova KS, Koonin EV, Brodersen DE, Peng X. Anti-CRISPR proteins encoded by archaeal lytic viruses inhibit subtype I-D immunity. Nat Microbiol 2018; 3:461-469. [DOI: 10.1038/s41564-018-0120-z] [Citation(s) in RCA: 97] [Impact Index Per Article: 16.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2017] [Accepted: 01/30/2018] [Indexed: 11/09/2022]
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Goulet A, Spinelli S, Blangy S, van Tilbeurgh H, Leulliot N, Basta T, Prangishvili D, Cambillau C, Campanacci V. The thermo- and acido-stable ORF-99 from the archaeal virus AFV1. Protein Sci 2009; 18:1316-20. [PMID: 19472363 DOI: 10.1002/pro.122] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
Acidianus Filamentous Virus 1 (AFV1), isolated from acidic hot springs, is an enveloped lipid-containing archaeal filamentous virus with a linear double-stranded DNA genome. It infects Acidianus, which is a hyperthermostable archaea growing at 85 degrees C and acidic pHs, below pH 3. AFV1-99, a protein of 99 amino acids of unknown function, has homologues in the archaeal virus families Lipothrixviridae and Rudiviridae. We determined the crystal structure of AFV1-99 at 2.05 A resolution. AFV1-99 has a new fold, is hyperthermostable (up to 95 degrees C) and resists to extreme pH (between pH 0 and 11) and to the combination of high temperature (95 degrees C) and low pH (pH 0). It possesses characteristics of hyperthermostable proteins, such as a high content of charged residues.
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Affiliation(s)
- Adeline Goulet
- Architecture et Fonction des Macromolécules Biologiques, CNRS and Universités d'Aix-Marseille I & II, 163 avenue de Luminy, Marseille cedex 9, France
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Goulet A, Spinelli S, Blangy S, van Tilbeurgh H, Leulliot N, Basta T, Prangishvili D, Cambillau C, Campanacci V. The crystal structure of ORF14 from Sulfolobus islandicus
filamentous virus. Proteins 2009; 76:1020-2. [DOI: 10.1002/prot.22448] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Keller J, Leulliot N, Cambillau C, Campanacci V, Porciero S, Prangishvili D, Forterre P, Cortez D, Quevillon-Cheruel S, van Tilbeurgh H. Crystal structure of AFV3-109, a highly conserved protein from crenarchaeal viruses. Virol J 2007; 4:12. [PMID: 17241456 PMCID: PMC1796864 DOI: 10.1186/1743-422x-4-12] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2006] [Accepted: 01/22/2007] [Indexed: 11/10/2022] Open
Abstract
The extraordinary morphologies of viruses infecting hyperthermophilic archaea clearly distinguish them from bacterial and eukaryotic viruses. Moreover, their genomes code for proteins that to a large extend have no related sequences in the extent databases. However, a small pool of genes is shared by overlapping subsets of these viruses, and the most conserved gene, exemplified by the ORF109 of the Acidianus Filamentous Virus 3, AFV3, is present on genomes of members of three viral familes, the Lipothrixviridae, Rudiviridae, and "Bicaudaviridae", as well as of the unclassified Sulfolobus Turreted Icosahedral Virus, STIV. We present here the crystal structure of the protein (Mr = 13.1 kD, 109 residues) encoded by the AFV3 ORF 109 in two different crystal forms at 1.5 and 1.3 A resolution. The structure of AFV3-109 is a five stranded beta-sheet with loops on one side and three helices on the other. It forms a dimer adopting the shape of a cradle that encompasses the best conserved regions of the sequence. No protein with a related fold could be identified except for the ortholog from STIV1, whose structure was deposited at the Protein Data Bank. We could clearly identify a well bound glycerol inside the cradle, contacting exclusively totally conserved residues. This interaction was confirmed in solution by fluorescence titration. Although the function of AFV3-109 cannot be deduced directly from its structure, structural homology with the STIV1 protein, and the size and charge distribution of the cavity suggested it could interact with nucleic acids. Fluorescence quenching titrations also showed that AFV3-109 interacts with dsDNA. Genomic sequence analysis revealed bacterial homologs of AFV3-109 as a part of a putative previously unidentified prophage sequences in some Firmicutes.
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Affiliation(s)
- Jenny Keller
- Institut de Biochimie et de Biophysique Moléculaire et Cellulaire, CNRS-UMR 8619, Université Paris 11, IFR115, Bâtiment 430, 91405 Orsay, France
| | - Nicolas Leulliot
- Institut de Biochimie et de Biophysique Moléculaire et Cellulaire, CNRS-UMR 8619, Université Paris 11, IFR115, Bâtiment 430, 91405 Orsay, France
| | - Christian Cambillau
- Architecture et Fonction des Macromolécules Biologiques, CNRS and Universités d'Aix-Marseille I & II, UMR 6098, Case 932, 163 avenue de Luminy, 13288 Marseille cedex 9, France
| | - Valérie Campanacci
- Architecture et Fonction des Macromolécules Biologiques, CNRS and Universités d'Aix-Marseille I & II, UMR 6098, Case 932, 163 avenue de Luminy, 13288 Marseille cedex 9, France
| | - Stéphanie Porciero
- Architecture et Fonction des Macromolécules Biologiques, CNRS and Universités d'Aix-Marseille I & II, UMR 6098, Case 932, 163 avenue de Luminy, 13288 Marseille cedex 9, France
| | - David Prangishvili
- Institut Pasteur, Unité de Biologie Moléculaire du Gène chez les Extrêmophiles, 25, rue du Dr. Roux, 75015 Paris, France
| | - Patrick Forterre
- Institut Pasteur, Unité de Biologie Moléculaire du Gène chez les Extrêmophiles, 25, rue du Dr. Roux, 75015 Paris, France
| | - Diego Cortez
- Institut Pasteur, Unité de Biologie Moléculaire du Gène chez les Extrêmophiles, 25, rue du Dr. Roux, 75015 Paris, France
| | - Sophie Quevillon-Cheruel
- Institut de Biochimie et de Biophysique Moléculaire et Cellulaire, CNRS-UMR 8619, Université Paris 11, IFR115, Bâtiment 430, 91405 Orsay, France
| | - Herman van Tilbeurgh
- Institut de Biochimie et de Biophysique Moléculaire et Cellulaire, CNRS-UMR 8619, Université Paris 11, IFR115, Bâtiment 430, 91405 Orsay, France
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