Glossary Term

Proteinase K Digestion

Extraction MethodologyEN

Definition

An enzymatic pre-treatment in nucleic-acid extraction that degrades proteins and nucleases, releasing nucleic acids from clinical material before binding, wash, and elution steps.

Extended Notes

Digestion conditions (temperature, duration, surfactants) determine lysis efficiency across specimen types and matter most for organisms with robust walls or intracellular locations. Extraction comparability studies should specify the digestion step, because it changes downstream performance.