RNA Purification: Removes contaminating genomic DNA during RNA isolation (on-column or in-solution) using ≥2000U/mL DNase I to preserve RNA integrity.

RT-qPCR Preparation: Treats RNA prior to cDNA synthesis to prevent gDNA amplification artifacts; apply ≥2000U/mL DNase I for reliable Ct values.

qPCR/RT-qPCR Controls: Generates no-RT and DNase-treated controls to confirm DNA-free RNA inputs using ≥2000U/mL DNase I.

Viscosity Reduction in Lysates: Degrades DNA in crude cell lysates (e.g., Escherichia coli) to reduce viscosity and improve clarification and filtration.

Protein Purification: Prevents DNA-mediated aggregation and improves chromatography performance by digesting nucleic acids in lysates with RNase-free DNase I.

Plasmid and Host DNA Removal: Eliminates residual DNA from viral vector, phage, and protein preparations to meet downstream purity requirements.

DNase I Footprinting: Maps protein–DNA interaction sites via controlled, partial digestion for high-resolution footprinting assays.

DNase-Seq and Hypersensitivity Assays: Identifies open chromatin regions through selective cleavage at accessible DNA sites.

Library Prep Cleanup: Removes unwanted DNA templates prior to RNA-focused library construction to reduce background reads.

Cell-Free Systems: Clears contaminating DNA from in vitro transcription/translation reactions without introducing RNase activity.

Exosome/EV Preparations: Digests extracellular DNA in vesicle isolates to distinguish internal nucleic acids from surface-bound contaminants.

Microbial Sample Processing: Decreases DNA viscosity in lysates from Escherichia coli and other bacteria to enhance centrifugation and filtration efficiency.