EMD-5179

Single-particle
7.2 Å
EMD-5179 Deposition: 06/04/2010
Map released: 17/11/2010
Last modified: 23/09/2011
Overview 3D View Sample Experiment Validation Volume Browser Additional data Links
Overview 3D View Sample Experiment Validation Volume Browser Additional data Links

EMD-5179

The Interaction of Decay-accelerating Factor with Echovirus 7

EMD-5179

Single-particle
7.2 Å
EMD-5179 Deposition: 06/04/2010
Map released: 17/11/2010
Last modified: 23/09/2011
Overview 3D View Sample Experiment Validation Volume Browser Additional data Links
Sample Organism: Human echovirus 7, Homo sapiens
Sample: Human Echovirus 7 in complex with Decay-accelerating Factor (DAF)
Fitted models: 3iyp (Avg. Q-score: 0.118)

Deposition Authors: PLEVKA P, HAFENSTEIN S, ZHANG Y, HARRIS KG, CIEFUENTE JO, BOWMAN VD, CHIPMAN PR, LIN F, MEDOF DE, BATOR CM, ROSSMANN MG
Interaction of decay-accelerating factor with echovirus 7.
Abstract:
Echovirus 7 (EV7) belongs to the Enterovirus genus within the family Picornaviridae. Many picornaviruses use IgG-like receptors that bind in the viral canyon and are required to initiate viral uncoating during infection. However, in addition, some of the enteroviruses use an alternative or additional receptor that binds outside the canyon. Decay-accelerating factor (DAF) has been identified as a cellular receptor for EV7. The crystal structure of EV7 has been determined to 3.1-Å resolution and used to interpret the 7.2-Å-resolution cryo-electron microscopy reconstruction of EV7 complexed with DAF. Each DAF binding site on EV7 is near a 2-fold icosahedral symmetry axis, which differs from the binding site of DAF on the surface of coxsackievirus B3, indicating that there are independent evolutionary processes by which DAF was selected as a picornavirus accessory receptor. This suggests that there is an advantage for these viruses to recognize DAF during the initial process of infection.