ArticleThe Biochemical journal2004
Evidence for specific tetraspanin homodimers: inhibition of palmitoylation makes cysteine residues available for cross-linking.
Article in The Biochemical journal, 2004. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 78 papers.
What it found
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
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Who cites it
78 citing papers in PubMed, 126 citations in OpenAlex.
- Photoreceptor outer segment disk rim curvature relies on a tetraspanin interaction web.The Journal of biological chemistry · 2026Article
- Photoreceptor outer segment disk rim curvature relies on a tetraspanin interaction web.bioRxiv : the preprint server for biology · 2026Article
- In-depth amino acid mutational analysis of the key interspecific incompatibility factor Stigmatic Privacy 1.Plant & cell physiology · 2025Article
- Superresolution Imaging Reveals the Spatial Organization of CD81 Microdomains in Regulating Membrane Signaling on Jurkat T Cell Microvilli.bioRxiv : the preprint server for biology · 2024Article
- The extracellular vesicle tetraspanin CD63 journey from the testis through the epididymis to mature bull sperm.Scientific reports · 2024Article
- Review
- The role of Tetraspanins in digestive system tumor development: update and emerging evidence.Frontiers in cell and developmental biology · 2024Review
- Dynamic association of the intramembrane proteases SPPL2a/b and their substrates with tetraspanin-enriched microdomains.iScience · 2023Article
- Distribution of tetraspanins in bovine ovarian tissue and fresh/vitrified oocytes.Histochemistry and cell biology · 2023Article
- Quantification of extracellular proteins, protein complexes and mRNAs in single cells by proximity sequencing.Nature methods · 2022Article
- Article
- Tetraspanin-enriched Microdomain Containing CD151, CD9, and TSPAN 8 - Potential Mediators of Entry and Exit Mechanisms in Respiratory Viruses Including SARS-CoV-2.Current pharmaceutical design · 2022Review
- Article
- Mesenchymal Stem Cell-Derived Extracellular Vesicles Protect Human Corneal Endothelial Cells from Endoplasmic Reticulum Stress-Mediated Apoptosis.International journal of molecular sciences · 2021Article
- Review
- EpCAM-claudin-tetraspanin-modulated ovarian cancer progression and drug resistance.Cell adhesion & migration · 2020Article
- Site-specific functionality and tryptophan mimicry of lipidation in tetraspanin CD9.The FEBS journal · 2020Article
- CD81 extracted in SMALP nanodiscs comprises two distinct protein populations within a lipid environment enriched with negatively charged headgroups.Biochimica et biophysica acta. Biomembranes · 2020Article
- Multistep peripherin-2/rds self-assembly drives membrane curvature for outer segment disk architecture and photoreceptor viability.Proceedings of the National Academy of Sciences of the United States of America · 2020Article
- Role of Transmembrane 4 L Six Family 1 in the Development and Progression of Cancer.Frontiers in molecular biosciences · 2020Review
18 more citing papers are in PubMed but not listed here.
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
4 authors at 1 institution in 1 country.
Funding
Abstract
It is a well-established fact that tetraspanin proteins, a large family of integral membrane proteins involved in cell motility, fusion and signalling, associate extensively with one another and with other transmembrane and membrane-proximal proteins. In this study, we present results strongly suggesting that tetraspanin homodimers are fundamental units within larger tetraspanin complexes. Evidence for constitutive CD9 homodimers was obtained using several cell lines, utilizing the following four methods: (1) spontaneous cross-linking via intermolecular disulphide bonds, (2) use of a cysteine-reactive covalent cross-linking agent, (3) use of an amino-reactive covalent cross-linking agent, and (4) covalent cross-linking via direct intermolecular disulphide bridging between unpalmitoylated membrane-proximal cysteine residues. In the last case, incubation of cells with the palmitoylation inhibitor 2-bromopalmitate exposed membrane-proximal cysteine residues, thus effectively promoting 'zero-length' cross-linking to stabilize homodimers. Similar to CD9, other tetraspanins (CD81 and CD151) also showed a tendency to homodimerize. Tetraspanin homodimers were assembled from newly synthesized proteins in the Golgi, as evidenced by cycloheximide and Brefeldin A inhibition studies. Importantly, tetraspanin homodimers appeared on the cell surface and participated in typical 'tetraspanin web' interactions with other proteins. Whereas homodimers were the predominant cross-linked species, we also observed some higher-order complexes (trimers, tetramers or higher) and a much lower level of cross-linking between different tetraspanins (CD81-CD9, CD9-CD151, CD81-CD151). In conclusion, our results strongly suggest that tetraspanin homodimers, formed in the Golgi and present at the cell surface, serve as building blocks for the assembly of larger, multicomponent tetraspanin protein complexes.
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Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.