4GB3

Human coxsackievirus B3 strain RD coat protein

Summary for 4GB3

• Entry DOI: 10.2210/pdb4gb3/pdb
• Descriptor: coat protein 1, coat protein 2, coat protein 3, ... (6 entities in total)
• Functional Keywords: capsid protein, virus
• Biological source: Human coxsackievirus B3; More
• Cellular location: Picornain 3C: Host cytoplasm (By similarity). Protein 3B: Virion (By similarity): F8VA14 F8VA14 F8VA14 F8VA14
• Total number of polymer chains: 4
• Total formula weight: 94288.21

Authors

Yoder, J.D.,Hafenstein, S. (deposition date: 2012-07-26, release date: 2012-09-26, Last modification date: 2024-10-09)

Primary citation

Yoder, J.D.,Cifuente, J.O.,Pan, J.,Bergelson, J.M.,Hafenstein, S.
The Crystal Structure of a Coxsackievirus B3-RD Variant and a Refined 9-Angstrom Cryo-Electron Microscopy Reconstruction of the Virus Complexed with Decay-Accelerating Factor (DAF) Provide a New Footprint of DAF on the Virus Surface.
J.Virol., 86:12571-12581, 2012

PubMed Abstract: The coxsackievirus-adenovirus receptor (CAR) and decay-accelerating factor (DAF) have been identified as cellular receptors for coxsackievirus B3 (CVB3). The first described DAF-binding isolate was obtained during passage of the prototype strain, Nancy, on rhabdomyosarcoma (RD) cells, which express DAF but very little CAR. Here, the structure of the resulting variant, CVB3-RD, has been solved by X-ray crystallography to 2.74 Å, and a cryo-electron microscopy reconstruction of CVB3-RD complexed with DAF has been refined to 9.0 Å. This new high-resolution structure permits us to correct an error in our previous view of DAF-virus interactions, providing a new footprint of DAF that bridges two adjacent protomers. The contact sites between the virus and DAF clearly encompass CVB3-RD residues recently shown to be required for binding to DAF; these residues interact with DAF short consensus repeat 2 (SCR2), which is known to be essential for virus binding. Based on the new structure, the mode of the DAF interaction with CVB3 differs significantly from the mode reported previously for DAF binding to echoviruses.

PubMed: 22973031
DOI: 10.1128/JVI.01592-12

Experimental method

X-RAY DIFFRACTION (2.74 Å)