title: gp180, a host cell glycoprotein that binds duck hepatitis B virus particles, is encoded by a member of the carboxypeptidase gene family.
abstract: Duck hepatitis B virus particles bearing the L and S envelope proteins bind a cellular glycoprotein of 180 kDa (gp180) with high affinity and specificity. Binding is mediated by the pre-S region of the L protein and is blocked by neutralizing but not by non-neutralizing monoclonal antibodies to the virus. These and other properties have suggested that gp180 may be a component of the viral entry machinery. Here we report the purification of gp180 from duck liver and the isolation and characterization of cDNA encoding it. DNA sequence analysis of this cDNA indicates that gp180 is a novel member of the basic carboxypeptidase gene family.
authors.affiliation: Department of Biophysics, Kanazawa University, Ishikawa, Japan.
authors.forename: K
authors.initials: K
authors.lastname: Kuroki
authors.forename: F
authors.initials: F
authors.lastname: Eng
authors.forename: T
authors.initials: T
authors.lastname: Ishikawa
authors.forename: C
authors.initials: C
authors.lastname: Turck
authors.forename: F
authors.initials: F
authors.lastname: Harada
authors.forename: D
authors.initials: D
authors.lastname: Ganem
mesh_terms: D000595:Amino Acid Sequence; D000818:Animals; D001483:Base Sequence; D002268:Carboxypeptidases / Q000096:biosynthesis / Q000235:genetics* / Q000378:metabolism*; D002460:Cell Line; D003001:Cloning, Molecular; D004372:Ducks; D015686:Gene Products, env / Q000378:metabolism; D015611:Hepatitis B Virus, Duck / Q000502:physiology*; D006801:Humans; D008099:Liver / Q000378:metabolism* / Q000821:virology*; D008562:Membrane Glycoproteins / Q000096:biosynthesis / Q000235:genetics* / Q000378:metabolism*; D008969:Molecular Sequence Data; D005810:Multigene Family; D009838:Oligodeoxyribonucleotides; D010446:Peptide Fragments / Q000737:chemistry / Q000302:isolation & purification; D011506:Proteins; D015183:Restriction Mapping; D017386:Sequence Homology, Amino Acid; D014162:Transfection
chemical_list: D015686:Gene Products, env; D008562:Membrane Glycoproteins; D009838:Oligodeoxyribonucleotides; D010446:Peptide Fragments; D011506:Proteins; D002268:Carboxypeptidases; C094315:metallocarboxypeptidase D