Summary for 8YBF
| Entry DOI | 10.2210/pdb8ybf/pdb |
| Descriptor | Hemagglutinin glycoprotein, 2-acetamido-2-deoxy-beta-D-glucopyranose (2 entities in total) |
| Functional Keywords | hemagglutinin, viral entry, viral protein |
| Biological source | Morbillivirus canis |
| Total number of polymer chains | 2 |
| Total formula weight | 100108.06 |
| Authors | Fukuhara, H.,Yumoto, K.,Sako, M.,Kajikawa, M.,Ose, T.,Hashiguchi, T.,Kamishikiryo, J.,Maita, N.,Kuroki, K.,Maenaka, K. (deposition date: 2024-02-13, release date: 2024-07-31, Last modification date: 2024-11-13) |
| Primary citation | Fukuhara, H.,Yumoto, K.,Sako, M.,Kajikawa, M.,Ose, T.,Kawamura, M.,Yoda, M.,Chen, S.,Ito, Y.,Takeda, S.,Mwaba, M.,Wang, J.,Hashiguchi, T.,Kamishikiryo, J.,Maita, N.,Kitatsuji, C.,Takeda, M.,Kuroki, K.,Maenaka, K. Glycan-shielded homodimer structure and dynamical features of the canine distemper virus hemagglutinin relevant for viral entry and efficient vaccination. Elife, 12:-, 2024 Cited by PubMed Abstract: Canine distemper virus (CDV) belongs to morbillivirus, including measles virus (MeV) and rinderpest virus, which causes serious immunological and neurological disorders in carnivores, including dogs and rhesus monkeys, as recently reported, but their vaccines are highly effective. The attachment glycoprotein hemagglutinin (CDV-H) at the CDV surface utilizes signaling lymphocyte activation molecule (SLAM) and Nectin-4 (also called poliovirus-receptor-like-4; PVRL4) as entry receptors. Although fusion models have been proposed, the molecular mechanism of morbillivirus fusion entry is poorly understood. Here, we determined the crystal structure of the globular head domain of CDV-H vaccine strain at 3.2 Å resolution, revealing that CDV-H exhibits a highly tilted homodimeric form with a six-bladed β-propeller fold. While the predicted Nectin-4-binding site is well conserved with that of MeV-H, that of SLAM is similar but partially different, which is expected to contribute to host specificity. Five -linked sugars covered a broad area of the CDV-H surface to expose receptor-binding sites only, supporting the effective production of neutralizing antibodies. These features are common to MeV-H, although the glycosylation sites are completely different. Furthermore, real-time observation using high-speed atomic force microscopy revealed highly mobile features of the CDV-H dimeric head via the connector region. These results suggest that sugar-shielded tilted homodimeric structure and dynamic conformational changes are common characteristics of morbilliviruses and ensure effective fusion entry and vaccination. PubMed: 39046448DOI: 10.7554/eLife.88929 PDB entries with the same primary citation |
| Experimental method | X-RAY DIFFRACTION (3.1 Å) |
Structure validation
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