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-Structure paper
タイトル | Structural basis of hepatitis B virus receptor binding. |
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ジャーナル・号・ページ | Nat Struct Mol Biol, Vol. 31, Issue 3, Page 447-454, Year 2024 |
掲載日 | 2024年1月17日 |
著者 | Jinta Asami / Jae-Hyun Park / Yayoi Nomura / Chisa Kobayashi / Junki Mifune / Naito Ishimoto / Tomoko Uemura / Kehong Liu / Yumi Sato / Zhikuan Zhang / Masamichi Muramatsu / Takaji Wakita / David Drew / So Iwata / Toshiyuki Shimizu / Koichi Watashi / Sam-Yong Park / Norimichi Nomura / Umeharu Ohto / |
PubMed 要旨 | Hepatitis B virus (HBV), a leading cause of developing hepatocellular carcinoma affecting more than 290 million people worldwide, is an enveloped DNA virus specifically infecting hepatocytes. ...Hepatitis B virus (HBV), a leading cause of developing hepatocellular carcinoma affecting more than 290 million people worldwide, is an enveloped DNA virus specifically infecting hepatocytes. Myristoylated preS1 domain of the HBV large surface protein binds to the host receptor sodium-taurocholate cotransporting polypeptide (NTCP), a hepatocellular bile acid transporter, to initiate viral entry. Here, we report the cryogenic-electron microscopy structure of the myristoylated preS1 (residues 2-48) peptide bound to human NTCP. The unexpectedly folded N-terminal half of the peptide embeds deeply into the outward-facing tunnel of NTCP, whereas the C-terminal half formed extensive contacts on the extracellular surface. Our findings reveal an unprecedented induced-fit mechanism for establishing high-affinity virus-host attachment and provide a blueprint for the rational design of anti-HBV drugs targeting virus entry. |
リンク | Nat Struct Mol Biol / PubMed:38233573 |
手法 | EM (単粒子) |
解像度 | 2.89 - 3.11 Å |
構造データ | EMDB-34981, PDB-8hrx: EMDB-34982, PDB-8hry: |
由来 |
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キーワード | TRANSPORT PROTEIN / hepatitis / HBV |