Biological Assembly 1  

 3D View: Structure | 1D-3D View | Electron Density | Validation Report | Ligand Interaction

Global Symmetry: Icosahedral - I  (3D View)
Global Stoichiometry: Hetero 300-mer - A60B60C60D60E60 Pseudo Symmetry: Icosahedral - I  (3D View)
Pseudo Stoichiometry: Hetero 300-mer - A120B60C60D60 

Biological assembly 1 assigned by authors and generated by (software)

Macromolecule Content

• Total Structure Weight: 137.92 kDa 
• Atom Count: 8495 
• Modelled Residue Count: 1080 
• Deposited Residue Count: 1241 
• Unique protein chains: 5

3IYP

The Interaction of Decay-accelerating Factor with Echovirus 7

• PDB DOI: 10.2210/pdb3IYP/pdb
• EM Map EMD-5179:EMDBEMDataResource

• Classification: VIRUS
• Organism(s): Echovirus E7, Homo sapiens
• Mutation(s): No 


• Deposited: 2010-04-07 Released: 2010-11-24 
• Deposition Author(s): Plevka, P., Hafenstein, S., Zhang, Y., Harris, K.G., Cifuente, J.O., Bowman, V.D., Chipman, P.R., Lin, F., Medof, D.E., Bator, C.M., Rossmann, M.G.

---

Experimental Data Snapshot

• Method: ELECTRON MICROSCOPY
• Resolution: 7.20 Å
• Aggregation State: PARTICLE 
• Reconstruction Method: SINGLE PARTICLE 

Literature

Interaction of decay-accelerating factor with echovirus 7.

Plevka, P., Hafenstein, S., Harris, K.G., Cifuente, J.O., Zhang, Y., Bowman, V.D., Chipman, P.R., Bator, C.M., Lin, F., Medof, M.E., Rossmann, M.G.

(2010) J Virol 84: 12665-12674

• PubMed: 20881044 
• DOI: 10.1128/JVI.00837-10
• Primary Citation of Related Structures:  
  2X5I, 3IYP


• PubMed 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.

---

Organizational Affiliation: 

Department of Biological Sciences, Purdue University, 915 W. State Street, West Lafayette, IN 47907-2054, USA.

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Capsid protein	A	292	Echovirus E7	Mutation(s): 0  Gene Names: VP1
UniProt
Find proteins for Q9QP24 (Echovirus E7) Explore Q9QP24  Go to UniProtKB:  Q9QP24

Entity ID: 2
Molecule	Chains	Sequence Length	Organism	Details	Image
Polyprotein	B	238	Echovirus E7	Mutation(s): 0  EC: 3.4.22.29 (UniProt), 3.6.1.15 (UniProt), 3.4.22.28 (UniProt), 2.7.7.48 (UniProt)
UniProt
Find proteins for Q6W9E5 (Echovirus E7) Explore Q6W9E5  Go to UniProtKB:  Q6W9E5

Entity ID: 3
Molecule	Chains	Sequence Length	Organism	Details	Image
Polyprotein	C	260	Echovirus E7	Mutation(s): 0  EC: 3.4.22.29 (UniProt), 3.6.1.15 (UniProt), 3.4.22.28 (UniProt), 2.7.7.48 (UniProt)
UniProt
Find proteins for Q6W9E5 (Echovirus E7) Explore Q6W9E5  Go to UniProtKB:  Q6W9E5

Entity ID: 4
Molecule	Chains	Sequence Length	Organism	Details	Image
Polyprotein	D	70	Echovirus E7	Mutation(s): 0
UniProt
Find proteins for Q91QV1 (Echovirus E7) Explore Q91QV1  Go to UniProtKB:  Q91QV1

Entity ID: 5
Molecule	Chains	Sequence Length	Organism	Details	Image
Complement decay-accelerating factor	E [auth F]	381	Homo sapiens	Mutation(s): 0  Gene Names: CD55, CR, DAF
UniProt & NIH Common Fund Data Resources
Find proteins for P08174 (Homo sapiens) Explore P08174  Go to UniProtKB:  P08174
PHAROS:  P08174 GTEx:  ENSG00000196352

Small Molecules

Ligands 1 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
DAO	F [auth A]	LAURIC ACID C12 H24 O2 POULHZVOKOAJMA-UHFFFAOYSA-N

Experimental Data & Validation

Experimental Data

• Method: ELECTRON MICROSCOPY
• Resolution: 7.20 Å
• Aggregation State: PARTICLE 
• Reconstruction Method: SINGLE PARTICLE 

Structure Validation

Entry History 

Deposition Data

• Deposited Date: 2010-04-07 
• Released Date: 2010-11-24 
Deposition Author(s): Plevka, P., Hafenstein, S., Zhang, Y., Harris, K.G., Cifuente, J.O., Bowman, V.D., Chipman, P.R., Lin, F., Medof, D.E., Bator, C.M., Rossmann, M.G.

Revision History  

• Version 1.0: 2010-11-24
  Type: Initial release
  
• Version 1.1: 2011-07-13
  Changes: Version format compliance
• Version 1.2: 2016-11-09
  Changes: Other
• Version 1.3: 2018-07-18
  Changes: Data collection