Academic literature on the topic 'Virus Retroviridae'

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Journal articles on the topic "Virus Retroviridae"

1

Shikova-Lekova, Evelina, Dirk Lindemann, Thomas Pietschmann, et al. "Replication-Competent Hybrids between Murine Leukemia Virus and Foamy Virus." Journal of Virology 77, no. 13 (2003): 7677–81. http://dx.doi.org/10.1128/jvi.77.13.7677-7681.2003.

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ABSTRACT Replication-competent chimeric retroviruses constructed of members of the two subfamilies of Retroviridae, orthoretroviruses and spumaretroviruses, specifically murine leukemia viruses (MuLV) bearing hybrid MuLV-foamy virus (FV) envelope (env) genes, were characterized. All viruses had the cytoplasmic tail of the MuLV transmembrane protein. In ESL-1, a truncated MuLV leader peptide (LP) was fused to the complete extracellular portion of FV Env, and ESL-2 to -4 contained the complete MuLV-LP followed by N-terminally truncated FV Env decreasing in size. ESL-1 to -4 had an extended host
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2

Bande, Faruku, Siti Suri Arshad, and Abdul Rahman Omar. "Isolation and Metagenomic Identification of Avian Leukosis Virus Associated with Mortality in Broiler Chicken." Advances in Virology 2016 (2016): 1–4. http://dx.doi.org/10.1155/2016/9058403.

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Avian leukosis virus (ALV) belongs to the family Retroviridae and causes considerable economic losses to the poultry industry. Following an outbreak associated with high mortality in a broiler flock in northern part of Malaysia, kidney tissues from affected chickens were submitted for virus isolation and identification in chicken embryonated egg and MDCK cells. Evidence of virus growth was indicated by haemorrhage and embryo mortality in egg culture. While viral growth in cell culture was evidenced by the development of cytopathic effects. The isolated virus was purified by sucrose gradient an
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3

Silveira, Júlia Meireles da Silva, Sheila de Oliveira Medeiros, Renata Fernandes Ferreira de Moraes, et al. "Cytomorphological similarities between feline viral leukemia, bovine enzootic leukosis and adult T-cell leukemia/lymphoma: A review." Research, Society and Development 10, no. 9 (2021): e13010917900. http://dx.doi.org/10.33448/rsd-v10i9.17900.

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Leukemias are malignant neoplasms of hematological origin and originating from bone marrow cells. Innumerable species can be affected by this disease, which can be originated by several causes, including infection by viruses belonging to the Retroviridae family. In felines, humans and cattle, the leukemia-inducing retroviruses are Feline Leukemia Virus (FeLV), human T-cell lymphotropic virus type 1 (HTLV-1) and Bovine Leukosis Virus (BLV), respectively. In Brazil, the number of domestic cats infected with FeLV grows progressively, when compared to the incidence of infected animals in developed
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4

Pietschmann, Thomas, Martin Heinkelein, Martina Heldmann, Hanswalter Zentgraf, Axel Rethwilm, and Dirk Lindemann. "Foamy Virus Capsids Require the Cognate Envelope Protein for Particle Export." Journal of Virology 73, no. 4 (1999): 2613–21. http://dx.doi.org/10.1128/jvi.73.4.2613-2621.1999.

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ABSTRACT Unlike other subclasses of the Retroviridae theSpumavirinae, its prototype member being the so-called human foamy virus (HFV), require the expression of the envelope (Env) glycoprotein for viral particle egress. Both the murine leukemia virus (MuLV) Env and the vesicular stomatitis virus G protein, which efficiently pseudotype other retrovirus capsids, were not able to support export of HFV particles. Analysis of deletion and point mutants of the HFV Env protein revealed that the HFV Env cytoplasmic domain (CyD) is dispensable for HFV particle envelopment, release, and infectivity, wh
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5

Geiselhart, Verena, Patrizia Bastone, Tore Kempf, Martina Schnölzer, and Martin Löchelt. "Furin-Mediated Cleavage of the Feline Foamy Virus Env Leader Protein." Journal of Virology 78, no. 24 (2004): 13573–81. http://dx.doi.org/10.1128/jvi.78.24.13573-13581.2004.

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ABSTRACT The molecular biology of spuma or foamy retroviruses is different from that of the other members of the Retroviridae. Among the distinguishing features, the N-terminal domain of the foamy virus Env glycoprotein, the 16-kDa Env leader protein Elp, is a component of released, infectious virions and is required for particle budding. The transmembrane protein Elp specifically interacts with N-terminal Gag sequences during morphogenesis. In this study, we investigate the mechanism of Elp release from the Env precursor protein. By a combination of genetic, biochemical, and biophysical metho
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6

Harper, D. R., R. L. Gilbert, T. J. O'Connor, et al. "Antiviral Activity of 2-Hydroxy Fatty Acids." Antiviral Chemistry and Chemotherapy 7, no. 3 (1996): 138–41. http://dx.doi.org/10.1177/095632029600700303.

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Following an earlier demonstration of an antiviral effect against varicella-zoster virus (VZV, human herpesvirus 3) using 2-hydroxymyristic acid (2-hydroxytetradecanoic acid; 2-HM), an inhibitor of protein myristoylation, both 2-HM and 2-hydroxypalmitic acid (2-hydroxyhexadecanoic acid; 2-HP) have been tested against a range of viruses. Although both compounds inhibit the replication of varicella-zoster virus (VZV; human herpesvirus 3) they do not inhibit the replication of closely related herpesviruses. They do, however, inhibit the replication of both poliovirus (a member of the Picornavirid
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7

Telwatte, Sushama, and Steven A. Yukl. "Exploring HIV latency using transcription profiling." Microbiology Australia 38, no. 3 (2017): 137. http://dx.doi.org/10.1071/ma17050.

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The major barrier to a cure for HIV is the existence of reservoirs consisting predominantly of latently infected CD4+ T cells, which do not produce virus constitutively but can be induced to produce infectious virus on activation. HIV latency research has largely focused on peripheral blood, yet most HIV-infected cells reside in tissues, especially the gut, where differences in drug penetration, cell types, and immune responses may impact mechanisms of persistence. Exploring the differences between the gut and the blood in transcriptional blocks may reveal fundamental insights into mechanisms
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8

Cartellieri, Marc, Ottmar Herchenröder, Wolfram Rudolph, et al. "N-Terminal Gag Domain Required for Foamy Virus Particle Assembly and Export." Journal of Virology 79, no. 19 (2005): 12464–76. http://dx.doi.org/10.1128/jvi.79.19.12464-12476.2005.

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ABSTRACT Among the Retroviridae, foamy viruses (FVs) exhibit an unusual way of particle assembly and a highly specific incorporation of envelope protein into progeny virions. We have analyzed deletions and point mutants of the prototypic FV gag gene for capsid assembly and egress, envelope protein incorporation, infectivity, and ultrastructure. Deletions introduced at the 3′ end of gag revealed the first 297 amino acids (aa) to be sufficient for specific Env incorporation and export of particulate material. Deletions introduced at the 5′ end showed the region between aa 6 and 200 to be dispens
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9

Kumar, Ramesh, Divya Mehta, Nimisha Mishra, Debasis Nayak, and Sujatha Sunil. "Role of Host-Mediated Post-Translational Modifications (PTMs) in RNA Virus Pathogenesis." International Journal of Molecular Sciences 22, no. 1 (2020): 323. http://dx.doi.org/10.3390/ijms22010323.

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Being opportunistic intracellular pathogens, viruses are dependent on the host for their replication. They hijack host cellular machinery for their replication and survival by targeting crucial cellular physiological pathways, including transcription, translation, immune pathways, and apoptosis. Immediately after translation, the host and viral proteins undergo a process called post-translational modification (PTM). PTMs of proteins involves the attachment of small proteins, carbohydrates/lipids, or chemical groups to the proteins and are crucial for the proteins’ functioning. During viral inf
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10

Álvarez, Enrique, Luis Menéndez-Arias, and Luis Carrasco. "The Eukaryotic Translation Initiation Factor 4GI Is Cleaved by Different Retroviral Proteases." Journal of Virology 77, no. 23 (2003): 12392–400. http://dx.doi.org/10.1128/jvi.77.23.12392-12400.2003.

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ABSTRACT The initiation factor eIF4G plays a central role in the regulation of translation. In picornaviruses, as well as in human immunodeficiency virus type 1 (HIV-1), cleavage of eIF4G by the viral protease leads to inhibition of protein synthesis directed by capped cellular mRNAs. In the present work, cleavage of both eIF4GI and eIF4GII has been analyzed by employing the proteases encoded within the genomes of several members of the family Retroviridae, e.g., Moloney murine leukemia virus (MoMLV), mouse mammary tumor virus, human T-cell leukemia virus type 1, HIV-2, and simian immunodefici
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