title: The use of a chimera HIV-1/HIV-2 envelope protein for immunodiagnosis of HIV infection: its expression and purification in E. coli by use of a translation initiation site within HIV-1 env gene.
abstract: A chimera HIV-1/HIV-2 envelope sequence composed of multiple conserved immunodominant epitopes of HIV-1 envelope protein (HIV-1 IIIB: env482-518 + env548-675) and the HIV-2 gp36 immunodominant epitope (env592-603), was constructed and directly over-expressed in E. coli by using a prokaryotic translation initiation sequence contained within the gene of HIV-1 envelope. The recombinant product was purified and applied in antibody-screening assay. The purified chimera antigen reacted with all the thirty-eight HIV-1 positive serum samples, the two HIV-2 serum samples, and had no cross-reaction with all the eighty-eight normal healthy serum sample. The results indicated that this recombinant chimera HIV-1/HIV-2 envelope protein could be useful for diagnostic purposes of HIV infection.
authors.affiliation: Institute of Basic Medical Sciences, Beijing, P.R. China.
authors.forename: B
authors.initials: B
authors.lastname: Han
authors.forename: L
authors.initials: L
authors.lastname: Meng
authors.forename: X
authors.initials: X
authors.lastname: Song
authors.forename: Q
authors.initials: Q
authors.lastname: Chen
authors.forename: H
authors.initials: H
authors.lastname: Wang
authors.forename: S
authors.initials: S
authors.lastname: Ling
authors.forename: X
authors.initials: X
authors.lastname: Ma
mesh_terms: D015492:AIDS Serodiagnosis; D000595:Amino Acid Sequence; D004797:Enzyme-Linked Immunosorbent Assay; D004926:Escherichia coli / Q000235:genetics; D015686:Gene Products, env / Q000737:chemistry / Q000235:genetics / Q000276:immunology* / Q000302:isolation & purification; D015752:Genes, env; D015483:HIV Antibodies / Q000097:blood*; D015488:HIV Antigens / Q000737:chemistry / Q000235:genetics / Q000276:immunology*; D015700:HIV Envelope Protein gp41 / Q000737:chemistry / Q000235:genetics / Q000276:immunology; D015658:HIV Infections / Q000175:diagnosis; D015497:HIV-1 / Q000235:genetics / Q000276:immunology; D015498:HIV-2 / Q000235:genetics / Q000276:immunology; D006801:Humans; D016056:Immunodominant Epitopes; D008969:Molecular Sequence Data; D010957:Plasmids; D014176:Protein Biosynthesis; D011993:Recombinant Fusion Proteins / Q000096:biosynthesis / Q000276:immunology / Q000302:isolation & purification; D054299:env Gene Products, Human Immunodeficiency Virus
chemical_list: D015686:Gene Products, env; D015483:HIV Antibodies; D015488:HIV Antigens; D015700:HIV Envelope Protein gp41; D016056:Immunodominant Epitopes; D011993:Recombinant Fusion Proteins; D054299:env Gene Products, Human Immunodeficiency Virus; C059763:env protein gp36, Human immunodeficiency virus