9
views
0
recommends
+1 Recommend
0 collections
    0
    shares
      • Record: found
      • Abstract: found
      • Article: not found

      Structural basis of mouse cytomegalovirus m152/gp40 interaction with RAE1γ reveals a paradigm for MHC/MHC interaction in immune evasion.

      Proceedings of the National Academy of Sciences of the United States of America
      Animals, Drosophila, metabolism, Escherichia coli, Gene Expression Regulation, Viral, HEK293 Cells, Humans, Immune System, Killer Cells, Natural, Ligands, Major Histocompatibility Complex, immunology, Membrane Glycoproteins, Mice, Molecular Conformation, Muromegalovirus, Mutation, NK Cell Lectin-Like Receptor Subfamily K, chemistry, Nuclear Matrix-Associated Proteins, Nucleocytoplasmic Transport Proteins, Protein Conformation, Protein Isoforms, Protein Structure, Secondary, Surface Plasmon Resonance, Viral Proteins, X-Ray Diffraction

      Read this article at

      ScienceOpenPublisherPMC
      Bookmark
          There is no author summary for this article yet. Authors can add summaries to their articles on ScienceOpen to make them more accessible to a non-specialist audience.

          Abstract

          Natural killer (NK) cells are activated by engagement of the NKG2D receptor with ligands on target cells stressed by infection or tumorigenesis. Several human and rodent cytomegalovirus (CMV) immunoevasins down-regulate surface expression of NKG2D ligands. The mouse CMV MHC class I (MHC-I)-like m152/gp40 glycoprotein down-regulates retinoic acid early inducible-1 (RAE1) NKG2D ligands as well as host MHC-I. Here we describe the crystal structure of an m152/RAE1γ complex and confirm the intermolecular contacts by mutagenesis. m152 interacts in a pincer-like manner with two sites on the α1 and α2 helices of RAE1 reminiscent of the NKG2D interaction with RAE1. This structure of an MHC-I-like immunoevasin/MHC-I-like ligand complex explains the binding specificity of m152 for RAE1 and allows modeling of the interaction of m152 with classical MHC-I and of related viral immunoevasins.

          Related collections

          Author and article information

          Comments

          Comment on this article