In vitro NHEJ assays were performed essentially as described previously (19 (link)). Briefly, reactions (10 μl) were performed in 50 mM HEPES pH 8.0, 100 mM KOAc, 0.5 mM Mg(OAc)2, 1 mM ATP, 1 mM DTT and 0.1 mg/ml bovine serum albumin (BSA) and the indicated concentration of Ku-DBi. pBluescript DNA was linearized with HindIII and 5′-32P-labeled. Reactions contained 10 ng of DNA and 25 μg of whole cell extract. Reactions were incubated at 37°C for 2 h, terminated by the addition of proteinase K/SDS/EDTA and incubated for an additional 30 min at 37°C. Products were separated by electrophoresis on 0.6% agarose gels. Products were detected in dried gels by PhosphorImager (BioRad PMI) analysis.
In Vitro NHEJ Assay Protocol
In vitro NHEJ assays were performed essentially as described previously (19 (link)). Briefly, reactions (10 μl) were performed in 50 mM HEPES pH 8.0, 100 mM KOAc, 0.5 mM Mg(OAc)2, 1 mM ATP, 1 mM DTT and 0.1 mg/ml bovine serum albumin (BSA) and the indicated concentration of Ku-DBi. pBluescript DNA was linearized with HindIII and 5′-32P-labeled. Reactions contained 10 ng of DNA and 25 μg of whole cell extract. Reactions were incubated at 37°C for 2 h, terminated by the addition of proteinase K/SDS/EDTA and incubated for an additional 30 min at 37°C. Products were separated by electrophoresis on 0.6% agarose gels. Products were detected in dried gels by PhosphorImager (BioRad PMI) analysis.
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Corresponding Organization : NĒRx BioSciences (United States)
Other organizations : University of Illinois Urbana-Champaign, University of Illinois at Chicago, Illinois College
Variable analysis
- Concentration of Ku-DBi
- NHEJ (non-homologous end joining) activity
- 50 mM HEPES pH 8.0
- 100 mM KOAc
- 0.5 mM Mg(OAc)2
- 1 mM ATP
- 1 mM DTT
- 0.1 mg/ml bovine serum albumin (BSA)
- Linearized pBluescript DNA with HindIII
- 25 μg of whole cell extract
- Positive control: Not explicitly mentioned.
- Negative control: Not explicitly mentioned.
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