Certain reagents utilized in the formation of polyacrylamide gels are shown to interfere in the Lowry assay for protein. Acrylamide (3-30%) and potassium ferrocyanide (O.OOlS-0.0105%) produced a linear response in color formation. Both compounds are capable of reducing the phenol reagent in the abse
Method for determination of specific activity of proteins in polyacrylamide gels
β Scribed by David H. Alpers; Robert Glickman
- Publisher
- Elsevier Science
- Year
- 1970
- Tongue
- English
- Weight
- 419 KB
- Volume
- 35
- Category
- Article
- ISSN
- 0003-2697
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β¦ Synopsis
Disc electrophoresis has been widely used as .a procedure for separating proteins. In many instances the gels have been analyzed for radioactivity and for protein content. However, the only available method for determining protein content has been microdensitometry, which is complex and requires expensive equipment. The present technique is a simple and reproducible method which permits accurate measurement of protein bands containing as little as 10 pg protein.
MESTHODS Electrophoresis
π SIMILAR VOLUMES
Dense and light polyacrylamide gels containing N,N'-( 1,2-dihydroxyethylene)bisacrylamide (DHEBA) or N,N'-diallyltartardiamide (DATD) as the crosslinker have been tested for their solubilization properties. Both types of gel can be dissolved in 10 mM periodic acid. The time and temperature required