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 accessAbstract
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.
Overview
The claims and statistics of this paper haven’t been checked yet.
Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.
Integrity signals
Registry
Cites
Statistics
Verification
Claims the paper makes
The claims and statistics of this paper haven’t been checked yet.
Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.
Self-check
Percentages, sums and reported differences re-computed from the paper’s own numbers.
The self-check needs the paper’s full text.
Citations
Cites
A new technique for the assay of infectivity of human adenovirus 5 DNA
Graham, F. L., & van der Eb, A. J. (1973) · Virology · doi:10.1016/0042-6822(73)90341-3 · Cited by 9,451
Melton, D. A., Krieg, P. A., Rebagliati, M. R., Maniatis, T., Zinn, K., & Green, M. R. (1984) · Nucleic Acids Research · doi:10.1093/nar/12.18.7035 · Cited by 6,324
Adachi, A., Gendelman, H. E., Koenig, S., Folks, T., Willey, R., Rabson, A., & Martin, M. A. (1986) · Journal of Virology · doi:10.1128/jvi.59.2.284-291.1986 · Cited by 2,834
Self-citationGorman, C. M., Merlino, G. T., Willingham, M. C., Pastan, I., & Howard, B. H. (1982) · Proceedings of the National Academy of Sciences · doi:10.1073/pnas.79.22.6777 · Cited by 1,298
Blobel, G., & Dobberstein, B. (1975) · The Journal of cell biology · doi:10.1083/jcb.67.3.852 · Cited by 1,169
Gendelman, H. E., Orenstein, J. M., Martin, M. A., Ferrua, C., Mitra, R., Phipps, T., Wahl, L. A., Lane, H. C., Fauci, A. S., & Burke, D. S. (1988) · The Journal of experimental medicine · doi:10.1084/jem.167.4.1428 · Cited by 781
Self-citationWilley, R. L., Smith, D. H., Lasky, L. A., Theodore, T. S., Earl, P. L., Moss, B., Capon, D. J., & Martin, M. A. (1988) · Journal of Virology · doi:10.1128/jvi.62.1.139-147.1988 · Cited by 751
Self-citation[6] Preparation of microsomal membranes for cotranslational protein translocation
Walter, P., & Blobel, G. (1983) · Methods in Enzymology · doi:10.1016/s0076-6879(83)96010-x · Cited by 663
Influenza virus M2 protein is an integral membrane protein expressed on the infected-cell surface
Lamb, R. A., Zebedee, S. L., & Richardson, C. D. (1985) · Cell · doi:10.1016/0092-8674(85)90211-9 · Cited by 576
A Novel Gene of HIV-1, vpu , and Its 16-Kilodalton Product
Strebel, K., Klimkait, T., & Martin, M. A. (1988) · Science · doi:10.1126/science.3261888 · Cited by 447
Self-citation
Cited by
Human immunodeficiency virus type 1 Vpu protein induces rapid degradation of CD4
Willey, R. L., Maldarelli, F., Martin, M. A., & Strebel, K. (1992) · Journal of Virology · doi:10.1128/jvi.66.12.7193-7200.1992 · Cited by 554
Self-citationRücker, E., Grivel, J.-C., Münch, J., Kirchhoff, F., & Margolis, L. (2004) · Journal of Virology · doi:10.1128/jvi.78.22.12689-12693.2004 · Cited by 48
The translational landscape of HIV-1 infected cells reveals key gene regulatory principles
Kibe, A., Buck, S., Gribling-Burrer, A.-S., Gilmer, O., Bohn, P., Koch, T., Mireisz, C. N.-M., Schlosser, A., Erhard, F., Smyth, R. P., et al. (2025) · Nature Structural & Molecular Biology · doi:10.1038/s41594-024-01468-3 · Cited by 19
Metadata
- Authors
- Strebel, K., Klimkait, T., Maldarelli, F., & Martin, M. A.
- Venue
- Journal of Virology
- Publisher
- American Society for Microbiology
- 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
About these checks
Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.
Statistics and arithmetic are recomputed, not judged.
Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.
What counts as a claim ›How we measure confidence ›How we check this ›
Are you an author, or do you see a problem with this page? Request a review
How to cite
Cite CoChat for the checks on this page, and the paper for its own findings.
- This page
- 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
- The paper
- 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
Data sources
Bibliographic data: Semantic Scholar, OpenAlex, Crossref.
Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).
Semantic Scholar’s data is described in: Kinney, R., et al. (2023). The Semantic Scholar Open Data Platform. arXiv:2301.10140.