Abstract
A striking characteristic of the simian immunodeficiency virus (SIV) and of the human immunodeficiency virus type 2 (HIV-2) is the presence of a nonsense mutation in the env gene resulting in the synthesis of a truncated transmembrane protein lacking the cytoplasmic domain. By mutagenesis of an infectious molecular clone of SIVmac142, we investigated the function of the cytoplasmic domain and the significance of the env nonsense mutation. When the nonsense codon (TAG) was replaced by a glutamine codon (CAG), the virus infected HUT78 cells with markedly delayed kinetics. This negative effect was counterselected in vitro as reversion of the slow phenotype frequently occurred. The sequencing of one revertant revealed the presence of a new stop codon three nucleotides 5' to the original mutation. Deletions or an additional nonsense mutation introduced 3' to the original stop codon did not modify SIV infectivity. In contrast, the same deletions or nonsense mutation introduced in the clone in which the stop codon was replaced by CAG abolished infectivity. These results indicated that the envelope domain located 3' to the stop codon is not necessary for in vitro replication. However, the presence of this domain in SIV transmembrane protein leads to a reduced infectivity. This negative effect might correspond to a function controlling the rate of spread of the virus during in vivo infection.
Full text
PDFImages in this article
Selected References
These references are in PubMed. This may not be the complete list of references from this article.
- Ahmad N., Venkatesan S. Nef protein of HIV-1 is a transcriptional repressor of HIV-1 LTR. Science. 1988 Sep 16;241(4872):1481–1485. doi: 10.1126/science.3262235. [DOI] [PubMed] [Google Scholar]
- Berman P. W., Nunes W. M., Haffar O. K. Expression of membrane-associated and secreted variants of gp160 of human immunodeficiency virus type 1 in vitro and in continuous cell lines. J Virol. 1988 Sep;62(9):3135–3142. doi: 10.1128/jvi.62.9.3135-3142.1988. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Chakrabarti L., Guyader M., Alizon M., Daniel M. D., Desrosiers R. C., Tiollais P., Sonigo P. Sequence of simian immunodeficiency virus from macaque and its relationship to other human and simian retroviruses. Nature. 1987 Aug 6;328(6130):543–547. doi: 10.1038/328543a0. [DOI] [PubMed] [Google Scholar]
- Clavel F., Guétard D., Brun-Vézinet F., Chamaret S., Rey M. A., Santos-Ferreira M. O., Laurent A. G., Dauguet C., Katlama C., Rouzioux C. Isolation of a new human retrovirus from West African patients with AIDS. Science. 1986 Jul 18;233(4761):343–346. doi: 10.1126/science.2425430. [DOI] [PubMed] [Google Scholar]
- Cohen E. A., Terwilliger E. F., Sodroski J. G., Haseltine W. A. Identification of a protein encoded by the vpu gene of HIV-1. Nature. 1988 Aug 11;334(6182):532–534. doi: 10.1038/334532a0. [DOI] [PubMed] [Google Scholar]
- Daniel M. D., Letvin N. L., King N. W., Kannagi M., Sehgal P. K., Hunt R. D., Kanki P. J., Essex M., Desrosiers R. C. Isolation of T-cell tropic HTLV-III-like retrovirus from macaques. Science. 1985 Jun 7;228(4704):1201–1204. doi: 10.1126/science.3159089. [DOI] [PubMed] [Google Scholar]
- Fisher A. G., Ratner L., Mitsuya H., Marselle L. M., Harper M. E., Broder S., Gallo R. C., Wong-Staal F. Infectious mutants of HTLV-III with changes in the 3' region and markedly reduced cytopathic effects. Science. 1986 Aug 8;233(4764):655–659. doi: 10.1126/science.3014663. [DOI] [PubMed] [Google Scholar]
- Franchini G., Gurgo C., Guo H. G., Gallo R. C., Collalti E., Fargnoli K. A., Hall L. F., Wong-Staal F., Reitz M. S., Jr Sequence of simian immunodeficiency virus and its relationship to the human immunodeficiency viruses. Nature. 1987 Aug 6;328(6130):539–543. doi: 10.1038/328539a0. [DOI] [PubMed] [Google Scholar]
- Fukasawa M., Miura T., Hasegawa A., Morikawa S., Tsujimoto H., Miki K., Kitamura T., Hayami M. Sequence of simian immunodeficiency virus from African green monkey, a new member of the HIV/SIV group. Nature. 1988 Jun 2;333(6172):457–461. doi: 10.1038/333457a0. [DOI] [PubMed] [Google Scholar]
- Fultz P. N., McClure H. M., Anderson D. C., Swenson R. B., Anand R., Srinivasan A. Isolation of a T-lymphotropic retrovirus from naturally infected sooty mangabey monkeys (Cercocebus atys). Proc Natl Acad Sci U S A. 1986 Jul;83(14):5286–5290. doi: 10.1073/pnas.83.14.5286. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Gazdar A. F., Carney D. N., Bunn P. A., Russell E. K., Jaffe E. S., Schechter G. P., Guccion J. G. Mitogen requirements for the in vitro propagation of cutaneous T-cell lymphomas. Blood. 1980 Mar;55(3):409–417. [PubMed] [Google Scholar]
- Guyader M., Emerman M., Sonigo P., Clavel F., Montagnier L., Alizon M. Genome organization and transactivation of the human immunodeficiency virus type 2. Nature. 1987 Apr 16;326(6114):662–669. doi: 10.1038/326662a0. [DOI] [PubMed] [Google Scholar]
- Henderson L. E., Sowder R. C., Copeland T. D., Benveniste R. E., Oroszlan S. Isolation and characterization of a novel protein (X-ORF product) from SIV and HIV-2. Science. 1988 Jul 8;241(4862):199–201. doi: 10.1126/science.3388031. [DOI] [PubMed] [Google Scholar]
- Hirsch V., Riedel N., Mullins J. I. The genome organization of STLV-3 is similar to that of the AIDS virus except for a truncated transmembrane protein. Cell. 1987 May 8;49(3):307–319. doi: 10.1016/0092-8674(87)90283-2. [DOI] [PubMed] [Google Scholar]
- Hirt B. Selective extraction of polyoma DNA from infected mouse cell cultures. J Mol Biol. 1967 Jun 14;26(2):365–369. doi: 10.1016/0022-2836(67)90307-5. [DOI] [PubMed] [Google Scholar]
- Kong L. I., Lee S. W., Kappes J. C., Parkin J. S., Decker D., Hoxie J. A., Hahn B. H., Shaw G. M. West African HIV-2-related human retrovirus with attenuated cytopathicity. Science. 1988 Jun 10;240(4858):1525–1529. doi: 10.1126/science.3375832. [DOI] [PubMed] [Google Scholar]
- Kowalski M., Potz J., Basiripour L., Dorfman T., Goh W. C., Terwilliger E., Dayton A., Rosen C., Haseltine W., Sodroski J. Functional regions of the envelope glycoprotein of human immunodeficiency virus type 1. Science. 1987 Sep 11;237(4820):1351–1355. doi: 10.1126/science.3629244. [DOI] [PubMed] [Google Scholar]
- Kyte J., Doolittle R. F. A simple method for displaying the hydropathic character of a protein. J Mol Biol. 1982 May 5;157(1):105–132. doi: 10.1016/0022-2836(82)90515-0. [DOI] [PubMed] [Google Scholar]
- Luciw P. A., Cheng-Mayer C., Levy J. A. Mutational analysis of the human immunodeficiency virus: the orf-B region down-regulates virus replication. Proc Natl Acad Sci U S A. 1987 Mar;84(5):1434–1438. doi: 10.1073/pnas.84.5.1434. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Naidu Y. M., Kestler H. W., 3rd, Li Y., Butler C. V., Silva D. P., Schmidt D. K., Troup C. D., Sehgal P. K., Sonigo P., Daniel M. D. Characterization of infectious molecular clones of simian immunodeficiency virus (SIVmac) and human immunodeficiency virus type 2: persistent infection of rhesus monkeys with molecularly cloned SIVmac. J Virol. 1988 Dec;62(12):4691–4696. doi: 10.1128/jvi.62.12.4691-4696.1988. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Perez L. G., Davis G. L., Hunter E. Mutants of the Rous sarcoma virus envelope glycoprotein that lack the transmembrane anchor and cytoplasmic domains: analysis of intracellular transport and assembly into virions. J Virol. 1987 Oct;61(10):2981–2988. doi: 10.1128/jvi.61.10.2981-2988.1987. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Peterlin B. M., Luciw P. A., Barr P. J., Walker M. D. Elevated levels of mRNA can account for the trans-activation of human immunodeficiency virus. Proc Natl Acad Sci U S A. 1986 Dec;83(24):9734–9738. doi: 10.1073/pnas.83.24.9734. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Sanger F., Nicklen S., Coulson A. R. DNA sequencing with chain-terminating inhibitors. Proc Natl Acad Sci U S A. 1977 Dec;74(12):5463–5467. doi: 10.1073/pnas.74.12.5463. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Schwartz D. E., Tizard R., Gilbert W. Nucleotide sequence of Rous sarcoma virus. Cell. 1983 Mar;32(3):853–869. doi: 10.1016/0092-8674(83)90071-5. [DOI] [PubMed] [Google Scholar]
- Sonigo P., Alizon M., Staskus K., Klatzmann D., Cole S., Danos O., Retzel E., Tiollais P., Haase A., Wain-Hobson S. Nucleotide sequence of the visna lentivirus: relationship to the AIDS virus. Cell. 1985 Aug;42(1):369–382. doi: 10.1016/s0092-8674(85)80132-x. [DOI] [PubMed] [Google Scholar]
- Sonigo P., Barker C., Hunter E., Wain-Hobson S. Nucleotide sequence of Mason-Pfizer monkey virus: an immunosuppressive D-type retrovirus. Cell. 1986 May 9;45(3):375–385. doi: 10.1016/0092-8674(86)90323-5. [DOI] [PubMed] [Google Scholar]
- Terwilliger E., Sodroski J. G., Rosen C. A., Haseltine W. A. Effects of mutations within the 3' orf open reading frame region of human T-cell lymphotropic virus type III (HTLV-III/LAV) on replication and cytopathogenicity. J Virol. 1986 Nov;60(2):754–760. doi: 10.1128/jvi.60.2.754-760.1986. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Tsujimoto H., Cooper R. W., Kodama T., Fukasawa M., Miura T., Ohta Y., Ishikawa K., Nakai M., Frost E., Roelants G. E. Isolation and characterization of simian immunodeficiency virus from mandrills in Africa and its relationship to other human and simian immunodeficiency viruses. J Virol. 1988 Nov;62(11):4044–4050. doi: 10.1128/jvi.62.11.4044-4050.1988. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Vaux D. J., Helenius A., Mellman I. Spike--nucleocapsid interaction in Semliki Forest virus reconstructed using network antibodies. Nature. 1988 Nov 3;336(6194):36–42. doi: 10.1038/336036a0. [DOI] [PubMed] [Google Scholar]
- Veronese F. D., DeVico A. L., Copeland T. D., Oroszlan S., Gallo R. C., Sarngadharan M. G. Characterization of gp41 as the transmembrane protein coded by the HTLV-III/LAV envelope gene. Science. 1985 Sep 27;229(4720):1402–1405. doi: 10.1126/science.2994223. [DOI] [PubMed] [Google Scholar]
- Wain-Hobson S., Sonigo P., Danos O., Cole S., Alizon M. Nucleotide sequence of the AIDS virus, LAV. Cell. 1985 Jan;40(1):9–17. doi: 10.1016/0092-8674(85)90303-4. [DOI] [PubMed] [Google Scholar]
- Wigler M., Pellicer A., Silverstein S., Axel R., Urlaub G., Chasin L. DNA-mediated transfer of the adenine phosphoribosyltransferase locus into mammalian cells. Proc Natl Acad Sci U S A. 1979 Mar;76(3):1373–1376. doi: 10.1073/pnas.76.3.1373. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Willey R. L., Smith D. H., Lasky L. A., Theodore T. S., Earl P. L., Moss B., Capon D. J., Martin M. A. In vitro mutagenesis identifies a region within the envelope gene of the human immunodeficiency virus that is critical for infectivity. J Virol. 1988 Jan;62(1):139–147. doi: 10.1128/jvi.62.1.139-147.1988. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Wills J. W., Srinivas R. V., Hunter E. Mutations of the Rous sarcoma virus env gene that affect the transport and subcellular location of the glycoprotein products. J Cell Biol. 1984 Dec;99(6):2011–2023. doi: 10.1083/jcb.99.6.2011. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Zoller M. J., Smith M. Oligonucleotide-directed mutagenesis: a simple method using two oligonucleotide primers and a single-stranded DNA template. DNA. 1984 Dec;3(6):479–488. doi: 10.1089/dna.1.1984.3.479. [DOI] [PubMed] [Google Scholar]