The development and applications of nonradioactive plate-formatted DNA-binding assay for Ku70/80, a multifunctional DNA-binding protein complex
| Autor: | Yali Lu, Ronald T. Aimes, Glen Lindwall, Carson Whiting, Lynn Truong, Joseph Thibault, Flossie Wong-Staal, Hongwen Ma, Shinong Long, Krista Bennett |
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| Rok vydání: | 2005 |
| Předmět: |
Glycerol
Ku80 Insecta Protein subunit Biology Sodium Chloride chemistry.chemical_compound Drug Discovery Animals Humans Technology Pharmaceutical Protein kinase A Ku Autoantigen DNA-PKcs Ku70 Ligand binding assay Antigens Nuclear DNA Cell cycle Molecular biology Recombinant Proteins Cell biology DNA-Binding Proteins chemistry Molecular Medicine Protein Binding |
| Zdroj: | Assay and drug development technologies. 2(5) |
| ISSN: | 1540-658X |
| Popis: | Ku is a heterodimer composed of p70 and p80, and is the regulatory subunit of DNA-dependent protein kinase. As a multifunctional DNA-binding protein complex, Ku plays important roles in DNA damage repair through non-homologous end joining and in V(D)J recombination. In addition, Ku has also been implicated in various biological functions including growth control, cell proliferation, cell cycle, chromosome maintenance, transcriptional regulation, apoptosis, and viral infection. In particular, using our Inverse Genomics (Immusol, Inc., San Diego, CA) platform technology, we recently identified Ku80 as an essential co-factor for human immunodeficiency virus replication. Although Ku has been studied extensively in the past years, its in-depth study as well as development as a drug target has been limited by conventional DNA-binding activity assay. Here we describe the development and applications of a nonradioactive DNA binding assay in the 96-well format. We show that this plate-formatted assay is more sensitive and allows for direct quantification when compared with an electrophoretic mobility shift assay. The establishment of this assay will not only facilitate structure and function studies on Ku, but also help the development of Ku protein or its DNA repair enzyme complex as a drug target. |
| Databáze: | OpenAIRE |
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