deoxyribonuclease
C2Technical, Scientific, Academic
Definition
Meaning
An enzyme that breaks down DNA (deoxyribonucleic acid) into smaller components like nucleotides.
Any of a class of enzymes that catalyze the hydrolytic cleavage of phosphodiester bonds in the DNA backbone; essential in molecular biology for DNA manipulation, repair, and degradation.
Linguistics
Semantic Notes
Commonly abbreviated as DNase. Refers specifically to enzymes acting on DNA, as opposed to ribonucleases (RNases) which act on RNA.
Dialectal Variation
British vs American Usage
Differences
No significant differences in meaning. Spelling and pronunciation are identical.
Connotations
None beyond its precise biochemical function.
Frequency
Used with identical frequency in academic and research contexts in both dialects.
Vocabulary
Collocations
Grammar
Valency Patterns
[Subject] (e.g., the enzyme, DNase) + verb (cleaves, digests, degrades) + [Object] (DNA, the substrate)Vocabulary
Synonyms
Strong
Neutral
Weak
Vocabulary
Antonyms
Usage
Context Usage
Business
Virtually never used.
Academic
Core term in molecular biology, genetics, and biochemistry papers and textbooks.
Everyday
Never used.
Technical
Essential term in laboratory protocols (e.g., 'DNase treatment to remove contaminating DNA').
Examples
By Part of Speech
adjective
British English
- The deoxyribonuclease inhibitor was added to the reaction.
American English
- A deoxyribonuclease-free environment is critical for RNA work.
Examples
By CEFR Level
- Scientists use deoxyribonuclease to cut DNA in specific places.
- Contamination with DNA can be prevented using deoxyribonuclease.
- The protocol requires treating the RNA sample with deoxyribonuclease I to eliminate genomic DNA contamination.
- Restriction deoxyribonucleases are indispensable tools for genetic engineering, allowing for precise DNA fragmentation.
Learning
Memory Aids
Mnemonic
Break down the word: DEOXYRIBOnuclease. Think: DEOXYRIBO (from DNA, deoxyribonucleic acid) + NUCLE (nucleic acid) + ASE (signifying an enzyme). An enzyme for DNA.
Conceptual Metaphor
A molecular pair of scissors for DNA.
Watch out
Common Pitfalls
Translation Traps (for Russian speakers)
- Avoid calquing as "дезоксирибонуклеаза" in English writing; use the English term or 'DNase'. Ensure the spelling of 'deoxyribo-' is correct.
Common Mistakes
- Misspelling: 'deoxiribonuclease', 'deoxyribonuclase'. Confusing it with 'ribonuclease' (RNase). Incorrectly using it as a verb (e.g., 'to deoxyribonuclease the sample').
Practice
Quiz
What is the primary function of deoxyribonuclease?
FAQ
Frequently Asked Questions
Yes, DNase is the standard abbreviation for deoxyribonuclease.
No, deoxyribonucleases are specific for DNA. Enzymes that break down RNA are called ribonucleases (RNases).
It is used to remove contaminating DNA from RNA samples, ensuring the purity of the RNA for downstream applications like sequencing or RT-PCR.
It is a type of deoxyribonuclease that cuts DNA at specific nucleotide sequences, known as restriction sites. These are fundamental tools in genetic engineering.