title: MHC class I recognition by Ly49 natural killer cell receptors.
abstract: Natural killer (NK) cell function is regulated by NK receptors that bind either classical MHC class I (MHC-I) molecules or their structural relatives (MICA, RAE-1 and H-60). Two distinct families of NK receptors have been identified: the C-type lectin-like family (Ly49, NKG2D and CD94/NKG2) and the immunoglobulin-like family (KIRs and LIRs). Here, we describe the crystal structure of the C-type lectin-like NK receptor (Ly49A), bound to its MHC-I ligand (H-2D(d)). We also discuss results from recent mutagenesis studies of the Ly49A/H-2D(d) interaction in the context of the complex structure.
authors.affiliation: Molecular Biology Section, Laboratory of Immunology, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD 20892-1892, USA.
authors.forename: Kannan
authors.initials: K
authors.lastname: Natarajan
authors.forename: Nazzareno
authors.initials: N
authors.lastname: Dimasi
authors.forename: Jian
authors.initials: J
authors.lastname: Wang
authors.forename: David H
authors.initials: DH
authors.lastname: Margulies
authors.forename: Roy A
authors.initials: RA
authors.lastname: Mariuzza
mesh_terms: D000818:Animals; D000950:Antigens, Ly; D015395:Histocompatibility Antigens Class I / Q000737:chemistry* / Q000276:immunology; D006801:Humans; D007694:Killer Cells, Natural / Q000276:immunology*; D037181:Lectins, C-Type; D008562:Membrane Glycoproteins / Q000737:chemistry* / Q000276:immunology; D051379:Mice; D008958:Models, Molecular; D055650:NK Cell Lectin-Like Receptor Subfamily A; D017434:Protein Structure, Tertiary; D011971:Receptors, Immunologic / Q000737:chemistry* / Q000276:immunology; D055630:Receptors, NK Cell Lectin-Like
chemical_list: D000950:Antigens, Ly; D015395:Histocompatibility Antigens Class I; C527088:Klra1 protein, mouse; D037181:Lectins, C-Type; D008562:Membrane Glycoproteins; D055650:NK Cell Lectin-Like Receptor Subfamily A; D011971:Receptors, Immunologic; D055630:Receptors, NK Cell Lectin-Like