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-Structure paper
| タイトル | Loss of FCoV-23 spike domain 0 enhances fusogenicity and entry kinetics. |
|---|---|
| ジャーナル・号・ページ | Nature, Vol. 645, Issue 8079, Page 235-243, Year 2025 |
| 掲載日 | 2025年7月9日 |
著者 | M Alejandra Tortorici / Annette Choi / Cecily A Gibson / Jimin Lee / Jack T Brown / Cameron Stewart / Anshu Joshi / Sheri Harari / Isabelle Willoughby / Catherine Treichel / Elizabeth M Leaf / Jesse D Bloom / Neil P King / Christine Tait-Burkard / Gary R Whittaker / David Veesler / ![]() |
| PubMed 要旨 | The ability of coronaviruses to recombine and cross species barriers affects human and animal health globally and is a pandemic threat. FCoV-23 is a recently emerged, highly pathogenic recombinant ...The ability of coronaviruses to recombine and cross species barriers affects human and animal health globally and is a pandemic threat. FCoV-23 is a recently emerged, highly pathogenic recombinant coronavirus responsible for a widespread outbreak of feline infectious peritonitis. Here we report cryogenic electron microscopy structures of two FCoV-23 spike isoforms that correspond to the in-host loss of domain 0 observed in clinical samples. The loss of domain 0 markedly enhances the fusogenicity and kinetics of entry into cells and possibly enables biotype switching and lethality. We show that FCoV-23 can use several aminopeptidase N orthologues as receptors and reveal the molecular determinants of receptor species tropism, including a glycan that modulates human receptor engagement. We define antigenic relationships among alphacoronaviruses that infect humans and other mammalian species and identify a cross-reactive alphacoronavirus monoclonal antibody that inhibits FCoV-23 entry. Our results pave the way for the development of vaccines and therapeutics that target this highly pathogenic virus. |
リンク | Nature / PubMed:40634609 / PubMed Central |
| 手法 | EM (単粒子) |
| 解像度 | 2.3 - 3.2 Å |
| 構造データ | EMDB-46708, PDB-9daz: EMDB-46709, PDB-9db0: EMDB-46710, PDB-9db1: EMDB-46714, PDB-9db3: EMDB-46716, PDB-9dbe: EMDB-46739, PDB-9dbz: |
| 化合物 | ![]() ChemComp-NAG: ![]() ChemComp-ZN: ![]() ChemComp-HOH: ![]() ChemComp-PAM: |
| 由来 |
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キーワード | VIRAL PROTEIN/HYDROLASE / Coronavirus / alphacoronavirus / feline coronavirus / cryo-EM / neutralization assays / binding assays / Structural Genomics / Seattle Structural Genomics Center for Infectious Disease / SSGCID / VIRAL PROTEIN-HYDROLASE complex / VIRAL PROTEIN |
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feline coronavirus (ネココロナウイルス)
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