Abstract:
:We have developed a rapid and sensitive method for total DNA measurement using single-stranded DNA binding protein from E coli conjugated with horseradish peroxidase or urease. To detect DNA, the sample is heated or alkali treated to denature the DNA and then filtered through nylon or nitrocellulose membranes. After the single-stranded DNA is bound to the membrane, single-stranded DNA binding protein enzyme-conjugate is incubated with the membrane. Next, the unbound conjugate is washed off the membrane and the bound conjugate detected colorimetrically. The assay can detect 10 pg of DNA in less than 3 hr. This method can be applied to the detection of DNA contamination in therapeutic proteins produced by recombinant DNA or hybridoma techniques.
journal_name
Biochem Biophys Res Communjournal_title
Biochemical and biophysical research communicationsauthors
Sheldon EL 3rd,Nagainis PA,Kung VTdoi
10.1016/0006-291x(89)91094-2subject
Has Abstractpub_date
1989-11-30 00:00:00pages
474-80issue
1eissn
0006-291Xissn
1090-2104pii
0006-291X(89)91094-2journal_volume
165pub_type
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