Characterization of a Highly Conserved Baculovirus Structural Protein That Is Specific for Occlusion-Derived Virions
| Autor: | Norman E. Crook, Hans T.M. Flipsen, David A. Theilmann, Sandra Stewart, J. K. Chantler, Just M. Vlak |
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| Rok vydání: | 1996 |
| Předmět: |
Immunoelectron microscopy
viruses Molecular Sequence Data Moths Virus Cell Line Conserved sequence Viral Envelope Proteins Sequence Homology Nucleic Acid Virology Animals Amino Acid Sequence Gene Peptide sequence Conserved Sequence Base Sequence Sequence Homology Amino Acid biology fungi Chromosome Mapping biology.organism_classification Molecular biology Fusion protein Nucleopolyhedroviruses Autographa californica DNA Viral Cydia pomonella granulosis virus |
| Zdroj: | Virology. 218(1):148-158 |
| ISSN: | 0042-6822 |
| DOI: | 10.1006/viro.1996.0175 |
| Popis: | A highly conserved baculovirus late gene called odvp-6e was shown to be a structural protein that is specific for occlusion-derived virus (ODV) envelopes. The complete sequence of this gene is presented for both Orgyia pseudotsugata nuclear polyhedrosis virus (OpMNPV) and Cydia pomonella granulosis virus (CpGV). The predicted sizes of the OpMNPV and CpGV ODVP-6E are 40, 241, and 38,655 respectively. The OpMNPV odvp-6e gene was transcriptionally mapped and was shown to initiate from a consensus late gene motif, TTAAG, and is expressed from 18-120 hr postinfection. Polyclonal antiserum was generated against a bacterial fusion protein and used to analyze the cellular steady-state levels of ODVP-6E and to determine if this protein was a component of either budded virus (BV) or ODV. Western blots showed that ODVP-6E is a component of the ODV but not BV. This was confirmed by immunoelectron microscopy of ODV from Autographa californica NPV (AcMNPV) which localized ODVP-6E to the ODV envelope. The sequences of the odvp-6e gene from the baculoviruses Choristoneura fumiferana NPV (CfMNPV), AcMNPV, and Helicoverpa zea NPV (HzSNPV) were obtained from GenBank. Comparisons of the predicted amino acid sequences of OpMNPV, CpGV, AcMNPV, CfMNPV, and HzSNPV show that there are two possible membrane-spanning domains and a cysteine-rich domain that are conserved in all of the proteins. |
| Databáze: | OpenAIRE |
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