title: Yaba-like disease virus protein 7L is a cell-surface receptor for chemokine CCL1.
abstract: Yaba-like disease virus (YLDV) genes 7L and 145R are located on opposite ends of the genome and are predicted to encode 7-transmembrane proteins (7-TM) that share 53 and 44 % amino acid identity, respectively, to human CC chemokine receptor 8 (hCCR8). In this report, we demonstrate that early after infection with YLDV, cells acquire the ability to bind human CCL1. By expression of genes 7L and 145R in vaccinia virus, we demonstrated that each protein is glycosylated and is exposed on the cell surface with the N terminus outside the cell. Protein 7L, but not 145R, is able to bind hCCL1 (K(d)=0.6+/-0.13 nM) and couple to heterotrimeric G-proteins and to activate the extracellular signal-regulated kinases (ERK1/2). 7L binds several chemokines including the viral chemokines vMIPI and vMIPII and hCCL7/MCP3. This binding seems species-specific as 7L does not bind the murine orthologues of CCL1 and CCL7 in the assays used. This represents the first example of a poxviral 7-TM chemokine receptor that has functional interactions with a human chemokine.
authors.affiliation: Department of Virology, Faculty of Medicine, Imperial College London, St Mary's Campus, Norfolk Place, London W2 1PG, UK.
authors.forename: Pilar
authors.initials: P
authors.lastname: Najarro
authors.affiliation: Department of Virology, Faculty of Medicine, Imperial College London, St Mary's Campus, Norfolk Place, London W2 1PG, UK.
authors.forename: Han-Joo
authors.initials: HJ
authors.lastname: Lee
authors.affiliation: Department of Leukocyte Biology, Faculty of Medicine, Imperial College London, South Kensington Campus, Exhibition Road, London SW1 2AZ, UK.
authors.forename: James
authors.initials: J
authors.lastname: Fox
authors.affiliation: Department of Leukocyte Biology, Faculty of Medicine, Imperial College London, South Kensington Campus, Exhibition Road, London SW1 2AZ, UK.
authors.forename: James
authors.initials: J
authors.lastname: Pease
authors.affiliation: Department of Virology, Faculty of Medicine, Imperial College London, St Mary's Campus, Norfolk Place, London W2 1PG, UK.
authors.forename: Geoffrey L
authors.initials: GL
authors.lastname: Smith
mesh_terms: D000595:Amino Acid Sequence; D000818:Animals; D002460:Cell Line; D054402:Chemokine CCL1; D019742:Chemokines, CC / Q000378:metabolism*; D019204:GTP-Binding Proteins / Q000378:metabolism; D006801:Humans; D019402:Macrophage Inflammatory Proteins / Q000378:metabolism; D019950:Mitogen-Activated Protein Kinase 1 / Q000378:metabolism; D048052:Mitogen-Activated Protein Kinase 3; D020928:Mitogen-Activated Protein Kinases / Q000378:metabolism; D008969:Molecular Sequence Data; D011485:Protein Binding; D011991:Receptors, Virus / Q000378:metabolism*; D011994:Recombinant Proteins / Q000378:metabolism; D016415:Sequence Alignment; D015398:Signal Transduction; D013045:Species Specificity; D014616:Vaccinia virus / Q000378:metabolism; D014764:Viral Proteins / Q000235:genetics / Q000378:metabolism*; D018158:Yatapoxvirus / Q000737:chemistry / Q000378:metabolism*
chemical_list: C065971:CCL1 protein, human; C502258:Ccl1 protein, mouse; C095218:Ccl9 protein, mouse; D054402:Chemokine CCL1; D019742:Chemokines, CC; D019402:Macrophage Inflammatory Proteins; D011991:Receptors, Virus; D011994:Recombinant Proteins; D014764:Viral Proteins; C070959:Ccl6 protein, mouse; D019950:Mitogen-Activated Protein Kinase 1; D048052:Mitogen-Activated Protein Kinase 3; D020928:Mitogen-Activated Protein Kinases; D019204:GTP-Binding Proteins