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-Structure paper
タイトル | The three-dimensional structure of genomic RNA in bacteriophage MS2: implications for assembly. |
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ジャーナル・号・ページ | J Mol Biol, Vol. 375, Issue 3, Page 824-836, Year 2008 |
掲載日 | 2008年1月18日 |
著者 | Katerina Toropova / Gabriella Basnak / Reidun Twarock / Peter G Stockley / Neil A Ranson / |
PubMed 要旨 | Using cryo-electron microscopy, single particle image processing and three-dimensional reconstruction with icosahedral averaging, we have determined the three-dimensional solution structure of ...Using cryo-electron microscopy, single particle image processing and three-dimensional reconstruction with icosahedral averaging, we have determined the three-dimensional solution structure of bacteriophage MS2 capsids reassembled from recombinant protein in the presence of short oligonucleotides. We have also significantly extended the resolution of the previously reported structure of the wild-type MS2 virion. The structures of recombinant MS2 capsids reveal clear density for bound RNA beneath the coat protein binding sites on the inner surface of the T=3 MS2 capsid, and show that a short extension of the minimal assembly initiation sequence that promotes an increase in the efficiency of assembly, interacts with the protein capsid forming a network of bound RNA. The structure of the wild-type MS2 virion at approximately 9 A resolution reveals icosahedrally ordered density encompassing approximately 90% of the single-stranded RNA genome. The genome in the wild-type virion is arranged as two concentric shells of density, connected along the 5-fold symmetry axes of the particle. This novel RNA fold provides new constraints for models of viral assembly. |
リンク | J Mol Biol / PubMed:18048058 |
手法 | EM (単粒子) |
解像度 | 9.0 - 17.8 Å |
構造データ | EMDB-1431: EMDB-1432: EMDB-1433: |
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