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Unique Structure and Distinctive Properties of the Ancient and Ubiquitous Gamma-Type Envelope Glycoprotein.
Viruses
January 2023
Biology Department, Boston College, Chestnut Hill, MA 02467, USA.
After the onset of the AIDS pandemic, HIV-1 (genus ) became the predominant model for studying retrovirus Env glycoproteins and their role in entry. However, HIV Env is an inadequate model for understanding entry of viruses in the , and genera. For example, oncogenic model system viruses such as Rous sarcoma virus (RSV, ), murine leukemia virus (MLV, ) and human T-cell leukemia viruses (HTLV-I and HTLV-II, ) encode Envs that are structurally and functionally distinct from HIV Env.
View Article and Find Full Text PDFResearch Note: Rous sarcoma growth differs among congenic lines containing major histocompatibility (B) complex recombinants.
Poult Sci
September 2021
Division of Animal and Nutritional Sciences, West Virginia University, Morgantown, WV. Electronic address:
New arrangements of chicken major histocompatibility complex (MHC) class I BF and class IV BG genes are created through recombination. Characterizing the immune responses of such recombinants reveals genes or gene regions that contribute to immunity. Inbred Line UCD 003 (B17B17) served as the genetic background for congenic lines, each containing a unique MHC recombinant.
View Article and Find Full Text PDFStructure of the mature Rous sarcoma virus lattice reveals a role for IP6 in the formation of the capsid hexamer.
Nat Commun
May 2021
Department of Molecular Biology and Genetics, Cornell University, Ithaca, NY, USA.
Inositol hexakisphosphate (IP6) is an assembly cofactor for HIV-1. We report here that IP6 is also used for assembly of Rous sarcoma virus (RSV), a retrovirus from a different genus. IP6 is ~100-fold more potent at promoting RSV mature capsid protein (CA) assembly than observed for HIV-1 and removal of IP6 in cells reduces infectivity by 100-fold.
View Article and Find Full Text PDFPreparation of divalent antigen-displaying enveloped virus-like particles using a single recombinant Bombyx mori nucleopolyhedrovirus bacmid in silkworms.
J Biotechnol
November 2020
Laboratory of Biotechnology, Department of Agriculture, Graduate School of Integrated Science and Technology, Shizuoka University, Ohya 836, Suruga-ku, Shizuoka, Japan; Laboratory of Biotechnology, Department of Bioscience, Graduate School of Science and Technology, Shizuoka University, Suruga-ku, Shizuoka, Japan; Laboratory of Biotechnology, Green Chemistry Research Division, Research Institute of Green Science and Technology, Shizuoka University, Ohya 836, Suruga-ku, Shizuoka, Japan. Electronic address:
Silkworms have been used as a host for the production of recombinant proteins in a baculovirus expression system using Bombyx mori nucleopolyhedrovirus (BmNPV). To coexpress several recombinant proteins, a silkworm must be coinfected with several recombinant BmNPVs, which requires a difficult DNA manipulation procedure. In this study, we constructed recombinant BmNPVs containing three expression cassettes, Rous sarcoma virus (RSV) Gag protein, surface antigen 1 of Neospora caninum (NcSAG1) and SAG1-related sequence 2 of N.
View Article and Find Full Text PDFNeuropathogenicity of newly isolated avian leukosis viruses from chickens with osteopetrosis and mesenchymal neoplasms.
Avian Pathol
October 2020
Laboratory of Veterinary Pathology, Co-department of Veterinary Medicine, Iwate University, Morioka, Japan.
The prototype fowl glioma-inducing virus (FGVp) causes fowl glioma and cerebellar hypoplasia in chickens. In this study, we investigated whether a strain of avian leukosis virus (ALV), associated with avian osteopetrosis and mesenchymal neoplasms, is able to induce fowl glioma. We encountered avian osteopetrosis and mesenchymal neoplasms, including myxosarcoma and rhabdomyosarcoma, in Japanese native chickens used for both egg-laying and meat production.
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