Envelope glycoprotein - Q05320 (VGP_EBOZM)

 

Protein Feature View of PDB entries mapped to a UniProtKB sequence  

  • Number of PDB entries for Q05320: 19
 
Function
Envelope glycoprotein: Trimeric GP1,2 complexes form the virion surface spikes and mediate the viral entry processes, with GP1 acting as the receptor-binding subunit and GP2 as the membrane fusion subunit. At later times of infection, downregulates the expression of various host cell surface molecules that are essential for immune surveillance and cell adhesion. Down-modulates several integrins including ITGA1, ITGA2, ITGA3, ITGA4, ITGA5, ITGA6, ITGAV and ITGB1. This decrease in cell adhesion molecules may lead to cell detachment, contributing to the disruption of blood vessel integrity and hemorrhages developed during infection (cytotoxicity). Interacts with host TLR4 and thereby stimulates the differentiation and activation of monocytes leading to bystander death of T-lymphocytes (PubMed:28542576). Downregulates as well the function of host natural killer cells (PubMed:30013549). Counteracts the antiviral effect of host BST2/tetherin that restricts release of progeny virions from infected cells. However, cooperates with VP40 and host BST2 to activate canonical NF-kappa-B pathway in a manner dependent on neddylation. UniProt
Pathway Maps
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Subunit Structure
Envelope glycoprotein: homotrimer; each monomer consists of a GP1 and a GP2 subunit linked by disulfide bonds. The resulting peplomers (GP1,2) protrude from the virus surface as spikes. Interacts with host integrin alpha-V/ITGAV and CLEC10A. Binds also to host CD209 and CLEC4M/DC-SIGN(R), as well as host FOLR1. Interacts with host entry receptor NPC1. Interacts with BST2; this interaction inhibits the antiviral effect of BST2 and this allows viral release from infected cells. Interacts with host FCN1; this interaction enhances viral entry (PubMed:26984723). Interacts with host TLR4; this interaction induces T-lymphocyte death (PubMed:28542576). Shed GP: GP1 and GP2delta are part of GP1,2delta soluble complexes released by ectodomain shedding. UniProt
Domain
The coiled coil regions play a role in oligomerization and fusion activity. UniProt
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Data in orange originates from the SCOP   (version 1.75) and SCOPe   (version 2.04) classifications.
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Data in blue originates from PDB
  • Secstruc: Secondary structure projected from representative PDB entries onto the UniProt sequence.
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Validation Track

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The PDB to UniProt mapping is based on the data provided by the EBI SIFTS project. See also Velankar et al., Nucleic Acids Research 33, D262-265 (2005).
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