Rapid purification of overexpressed T4 DNA polymerase.

Rush J, Konigsberg WH
Prep Biochem (1989), Volume 19, Page 329
PubMed entry


A method for purifying T4 DNA polymerase from cells harboring ...
A method for purifying T4 DNA polymerase from cells harboring overexpression plasmids is described. T4 DNA polymerase is precipitated from induced, lysed cells with polyethyleneimine, then extracted and fractionated further with (NH4)2SO4 before chromatography on a column of single-stranded DNA cellulose. This procedure can be completed in three days and consistently provides enzyme preparations which are at least 98% pure. When necessary, one further chromatography step provides T4 DNA polymerase suitable for recombinant DNA applications.





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