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. 1978 Nov;75(11):5291–5295. doi: 10.1073/pnas.75.11.5291

Filter-binding assay for covalent DNA-protein complexes: adenovirus DNA-terminal protein complex.

D H Coombs, G D Pearson
PMCID: PMC392948  PMID: 281680

Abstract

A rapid, simple, and quantitative filter-binding assay using glass fiber filters has been developed to detect the convalent adenovirus DNA-terminal protein complex. The assay is unusually sensitive because binding of protein-free DNA generally is less than 0.1%. Binding of the adenovirus complex to filters is mediated by terminal protein. We have found that: (i) the adenovirus complex binds maximally to filters in NaCl at concentrations higher than 0.2 M; (ii) noncovalent complexes between protein-free DNA and adenovirus proteins bind to filters in salt at concentrations lower than 0.4 M but not in concentrations higher than 0.7 M; and (iii) protein-free DNA alone binds to filters in guanidine.hydrochloride at concentrations higher than 0.8 M. By varying the ionic conditions, "all or none" modulation of these interactions can be achieved.

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Selected References

These references are in PubMed. This may not be the complete list of references from this article.

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