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-Structure paper
タイトル | Structures of HCMV Trimer reveal the basis for receptor recognition and cell entry. |
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ジャーナル・号・ページ | Cell, Vol. 184, Issue 5, Page 1232-1244.e16, Year 2021 |
掲載日 | 2021年3月4日 |
著者 | Marc Kschonsak / Lionel Rougé / Christopher P Arthur / Ho Hoangdung / Nidhi Patel / Ingrid Kim / Matthew C Johnson / Edward Kraft / Alexis L Rohou / Avinash Gill / Nadia Martinez-Martin / Jian Payandeh / Claudio Ciferri / |
PubMed 要旨 | Human cytomegalovirus (HCMV) infects the majority of the human population and represents the leading viral cause of congenital birth defects. HCMV utilizes the glycoproteins gHgLgO (Trimer) to bind ...Human cytomegalovirus (HCMV) infects the majority of the human population and represents the leading viral cause of congenital birth defects. HCMV utilizes the glycoproteins gHgLgO (Trimer) to bind to platelet-derived growth factor receptor alpha (PDGFRα) and transforming growth factor beta receptor 3 (TGFβR3) to gain entry into multiple cell types. This complex is targeted by potent neutralizing antibodies and represents an important candidate for therapeutics against HCMV. Here, we determine three cryogenic electron microscopy (cryo-EM) structures of the trimer and the details of its interactions with four binding partners: the receptor proteins PDGFRα and TGFβR3 as well as two broadly neutralizing antibodies. Trimer binding to PDGFRα and TGFβR3 is mutually exclusive, suggesting that they function as independent entry receptors. In addition, Trimer-PDGFRα interaction has an inhibitory effect on PDGFRα signaling. Our results provide a framework for understanding HCMV receptor engagement, neutralization, and the development of anti-viral strategies against HCMV. |
リンク | Cell / PubMed:33626330 |
手法 | EM (単粒子) |
解像度 | 2.6 - 2.9 Å |
構造データ | EMDB-23252, PDB-7lbe: EMDB-23253, PDB-7lbf: EMDB-23254, PDB-7lbg: |
化合物 | ChemComp-NAG: ChemComp-MAN: |
由来 |
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キーワード | VIRAL PROTEIN/Immune System / virus / receptor / complex / neutralizing antibody / VIRAL PROTEIN / VIRAL PROTEIN-Immune System complex |