title: Host-virus specificity of morbilliviruses predicted by structural modeling of the marine mammal SLAM, a receptor.
abstract: Signaling lymphocyte activation molecule (SLAM) is thought to be a major cellular receptor for high-host specificity morbilliviruses, which cause devastating and highly infectious diseases in mammals. We determined the sequences of SLAM cDNA from five species of marine mammal, including two cetaceans, two pinnipeds and one sirenian, and generated three-dimensional models to understand the receptor-virus interaction. Twenty-one amino acid residues in the immunoglobulin-like V domains of the SLAMs were shown to bind the viral protein. Notably, the sequences from pinnipeds and dogs were highly homologous, which is consistent with the fact that canine distemper virus was previously shown to cause a mass die-off of seals. Among these twenty-one residues, eight (63, 66, 68, 72, 84, 119, 121 and 130) were shared by animal groups susceptible to a particular morbillivirus species. This set of residues appears to determine host-virus specificity and may be useful for risk estimation for morbilliviruses.
authors.affiliation: Japan Agency for Marine-Earth Science and Technology (JAMSTEC), Yokosuka, Kanagawa, Japan. oishik@jamstec.go.jp
authors.forename: Kazue
authors.initials: K
authors.lastname: Ohishi
authors.forename: Akiko
authors.initials: A
authors.lastname: Ando
authors.forename: Rintaro
authors.initials: R
authors.lastname: Suzuki
authors.forename: Kiyotaka
authors.initials: K
authors.lastname: Takishita
authors.forename: Masaru
authors.initials: M
authors.lastname: Kawato
authors.forename: Etsuko
authors.initials: E
authors.lastname: Katsumata
authors.forename: Dai
authors.initials: D
authors.lastname: Ohtsu
authors.forename: Kenji
authors.initials: K
authors.lastname: Okutsu
authors.forename: Koji
authors.initials: K
authors.lastname: Tokutake
authors.forename: Hirokazu
authors.initials: H
authors.lastname: Miyahara
authors.forename: Hirotaka
authors.initials: H
authors.lastname: Nakamura
authors.forename: Tsukasa
authors.initials: T
authors.lastname: Murayama
authors.forename: Tadashi
authors.initials: T
authors.lastname: Maruyama
mesh_terms: D000595:Amino Acid Sequence; D000818:Animals; D015703:Antigens, CD / Q000737:chemistry*; D010872:Caniformia; D002591:Cetacea; D004285:Dogs; D006389:Hemagglutinins, Viral / Q000235:genetics; D054884:Host-Pathogen Interactions; D006801:Humans; D008954:Models, Biological; D008968:Molecular Conformation; D008969:Molecular Sequence Data; D018103:Morbillivirus / Q000502:physiology*; D018185:Morbillivirus Infections / Q000821:virology*; D010802:Phylogeny; D011956:Receptors, Cell Surface / Q000737:chemistry*; D020539:Sequence Analysis, Protein; D000071177:Signaling Lymphocytic Activation Molecule Family Member 1; D020453:Sirenia; D013045:Species Specificity; D053585:Virus Attachment
chemical_list: D015703:Antigens, CD; C104413:H protein, Dolphin morbillivirus; D006389:Hemagglutinins, Viral; D011956:Receptors, Cell Surface; D000071177:Signaling Lymphocytic Activation Molecule Family Member 1