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Cited by 275

The DOI matches its Crossref record; 18 of the 18 references it cites were found in a registry or an index.

Molecular and biochemical analyses of human immunodeficiency virus type 1 vpu protein

Open access
Strebel, K, Klimkait, T, Maldarelli, F, Martin, M A·1989·Journal of Virology

Abstract

We have performed a detailed analysis of the biochemical properties of the human immunodeficiency virus (HIV) type 1 vpu gene product to elucidate its function during virus replication. Our data suggest that vpu is posttranslationally modified by phosphorylation, since a 16-kilodalton phosphoprotein can be specifically immunoprecipitated with both a serum from an HIV-positive individual (HIV-positive serum) and a vpu-specific antiserum. In contrast, our results suggest that vpu is not glycosylated, even though the protein contains a potential glycosylation site. In vitro translation studies demonstrated that vpu is cotranslationally integrated into microsomal membranes, suggesting that vpu is an integral membrane protein. While vpu was found in significant quantities in virus-producing cells, the protein could not be detected in cell-free culture fluids and is therefore most likely not viron associated. Processing of viral precursor proteins was unaffected by the absence of vpu, and no differences were detected in the protein compositions of wild-type and mutant virions. However, virus release from cultures producing vpu-defective virus was found to be delayed, resulting in the intracellular accumulation of viral proteins. Our data suggest that vpu has a function in the release of virus particles from infected cells.

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Crossref · 10.1128/jvi.63.9.3784-3791.1989

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Metadata

Authors
Strebel, K., Klimkait, T., Maldarelli, F., & Martin, M. A.
Venue
Journal of Virology
Published
1989-09
Volume
63
Issue
9
Pages
3784-3791
ISSN
  • 0022-538X (ISSN-L)
  • 1098-5514
OpenAlex
W1555930389
Cited by
275
References
18
FWCI
2.86
Type
journal article
Language
en
Open access
bronze

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CoChat. (2026). Citation check: Molecular and biochemical analyses of human immunodeficiency virus type 1 vpu protein. https://app.cochat.ai/papers/10.1128/jvi.63.9.3784-3791.1989
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Strebel, K., Klimkait, T., Maldarelli, F., & Martin, M. A. (1989). Molecular and biochemical analyses of human immunodeficiency virus type 1 vpu protein. Journal of Virology. https://doi.org/10.1128/jvi.63.9.3784-3791.1989

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Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).

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