ArticleCell cycle (Georgetown, Tex.)2019
Determination of the number of RAD51 molecules in different human cell lines.
Article in Cell cycle (Georgetown, Tex.), 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 6 papers.
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Who cites it
6 citing papers in PubMed, 9 citations in OpenAlex.
- Particulate Hexavalent Chromium Inhibits RAD51 Paralogs Necessary for RAD51 Filament Formation and Stabilization During Homologous Recombination Repair.Occupational Health · 2026Article
- HROB Is Implicated in DNA Replication.Genes · 2024Article
- Replication Protein A, the Main Eukaryotic Single-Stranded DNA Binding Protein, a Focal Point in Cellular DNA Metabolism.International journal of molecular sciences · 2024Review
- Imaging the Response to DNA Damage in Heterochromatin Domains.Frontiers in cell and developmental biology · 2022Article
- Dynamic Modelling of DNA Repair Pathway at the Molecular Level: A New Perspective.Frontiers in molecular biosciences · 2022Article
- Mechanisms of distinctive mismatch tolerance between Rad51 and Dmc1 in homologous recombination.Nucleic acids research · 2021Article
Corrections and comments
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Authors and funding
6 authors at 2 institutions in 2 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Knowledge about precise numbers of specific molecules is necessary for understanding and verification of biological pathways. The RAD51 protein is central in the repair of DNA double-strand breaks (DSBs) by homologous recombination repair and understanding its role in cellular pathways is crucial to design mechanistic DNA repair models. Here, we determined the number of RAD51 molecules in several human cell lines including primary fibroblasts. We showed that between 20000 to 100000 of RAD51 molecules are available per human cell that theoretically can be used for simultaneously loading at least 7 DSBs. Interestingly, the amount of RAD51 molecules does not significantly change after the induction of DNA damage using bleomycin or γ-irradiation in cells but an accumulation of RAD51 on the chromatin occurs. Furthermore, we generated an EGFP-RAD51 fusion under the control of HSV thymidine kinase promoter sequences yielding moderate protein expression levels comparable to endogenously expressed RAD51. Initial characterizations suggest that these low levels of ectopically expressed RAD51 are compatible with cell cycle progression of human cells. Hence, we provide parameters for the quantitative understanding and modeling of RAD51-involving processes.
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