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'''Structure of the Epstein-Barr Virus gp42 Protein Bound to the MHC class II Receptor HLA-DR1'''
===Structure of the Epstein-Barr Virus gp42 Protein Bound to the MHC class II Receptor HLA-DR1===




==Overview==
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Epstein-Barr virus (EBV) causes infectious mononucleosis, establishes long-term latent infections, and is associated with a variety of human tumors. The EBV gp42 glycoprotein binds MHC class II molecules, playing a critical role in infection of B lymphocytes. EBV gp42 belongs to the C-type lectin superfamily, with homology to NK receptors of the immune system. We report the crystal structure of gp42 bound to the human MHC class II molecule HLA-DR1. The gp42 binds HLA-DR1 using a surface site that is distinct from the canonical lectin and NK receptor ligand binding sites. At the canonical ligand binding site, gp42 forms a large hydrophobic groove, which could interact with other ligands necessary for EBV entry, providing a mechanism for coupling MHC recognition and membrane fusion.
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==About this Structure==
==About this Structure==
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[[Category: Mhc]]
[[Category: Mhc]]
[[Category: Virus]]
[[Category: Virus]]
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