Protein Expression Prokaryotic cells E. coli

I am currently using a recombinant protein which shows metal-dependent DNase activity. Is it possible to pinpoint the source of the DNase activity after protein purification? More specifically, can I ensure that the DNase activity is not because of nuclease contamination from the E.coli that might have persisted and passed with the protein of interest during purification?

Get tips on using AllPrep DNA/RNA/Protein Mini Kit (50) to perform DNA isolation / purification Tissue - brain

Get tips on using Anti-Prosurfactant Protein C (proSP-C) Antibody to perform Flow cytometry Anti-bodies Mouse - proSP-C

Get tips on using Blu10 Plus (BLUltra) Prestained Protein Ladder（6.5 to 270 kDa） to perform Protein Ladder Prestained

Get tips on using Blue Prestained Protein Marker, Broad Range (11-250 kDa) #59329 to perform Protein Ladder Prestained

Get tips on using Prestained Protein Ladder – Broad molecular weight (10-245 kDa) (ab116028) to perform Protein Ladder Prestained

Transfection is a powerful technique that enables the study of the function of genes and gene products in cells. Based on the nature of experiments, we may need a stable DNA transfection in cells for persistent gain-of-function or loss-of-function of the target gene. For stable transfection, integration of a DNA vector into the chromosome is crucial which requires selective screening and clonal isolation. By carefully selecting a viral delivery system and related reagents we can ensure safe and highly-efficient delivery of expression constructs for high-level constitutive or inducible expression in any mammalian cell type.

Get tips on using AllPrep Bacterial DNA/RNA/Protein Kit (50) to perform DNA isolation / purification Bacteria - Gram negative Massilia sp

Get tips on using Prestained Protein Ladder – Extra broad molecular weight (6.5 – 270 kDa) (ab234592) to perform Protein Ladder Prestained

Get tips on using Prestained Protein Ladder – Extra broad molecular weight (5 - 245 kDa) (ab116029) to perform Protein Ladder Prestained