oxygenase
LowTechnical/Scientific
Definition
Meaning
An enzyme that catalyses the incorporation of molecular oxygen into a substrate.
In biochemistry, an oxygenase is any oxidoreductase enzyme that uses molecular oxygen (O₂) to incorporate one or both of its oxygen atoms into an organic substrate. The term specifically distinguishes these enzymes from oxidases, which use oxygen as an electron acceptor without incorporating it.
Linguistics
Semantic Notes
The word is a technical term in biochemistry and molecular biology. It almost exclusively appears in scientific literature and is rarely, if ever, used in general conversation. It is a compound noun formed from 'oxygen' + '-ase' (a suffix denoting an enzyme).
Dialectal Variation
British vs American Usage
Differences
No significant differences in meaning, spelling, or usage. Pronunciation follows regional patterns for the phonemes.
Connotations
Purely technical with no cultural or regional connotations.
Frequency
Identically rare and specialised in both varieties. Usage is entirely confined to scientific contexts.
Vocabulary
Collocations
Grammar
Valency Patterns
The [SPECIFIC] oxygenase catalyses the reaction.[SUBSTRATE] is a substrate for the oxygenase.The activity of the oxygenase was measured.Vocabulary
Synonyms
Neutral
Weak
Vocabulary
Antonyms
Usage
Context Usage
Business
Not used.
Academic
Exclusively used in scientific research papers, biochemistry textbooks, and related academic discourse.
Everyday
Not used.
Technical
Core term in biochemistry, enzymology, pharmacology, and metabolic engineering.
Examples
By Part of Speech
adjective
British English
- The oxygenase activity was inhibited.
- An oxygenase-dependent pathway.
American English
- The oxygenase activity was inhibited.
- An oxygenase-dependent pathway.
Examples
By CEFR Level
- The scientist studied an enzyme called an oxygenase.
- Oxygenases are important in drug metabolism.
- Cytochrome P450 enzymes are a major family of monooxygenases involved in detoxification.
- The research focused on the mechanistic details of the novel bacterial dioxygenase.
Learning
Memory Aids
Mnemonic
Think: 'OXYGEN' + 'ase' (like other enzymes: protease, lipase). An enzyme that adds oxygen.
Conceptual Metaphor
A specialised machine or tool in the cellular factory that installs oxygen atoms onto other molecules.
Watch out
Common Pitfalls
Translation Traps (for Russian speakers)
- Do not confuse with 'оксигеназа' (direct equivalent) and 'оксидаза' (oxidase, a different enzyme class).
- The '-ase' ending is crucial and always indicates an enzyme.
Common Mistakes
- Misspelling as 'oxigenase' (missing 'y').
- Incorrectly using it as a verb (e.g., 'to oxygenase').
- Confusing it with 'oxidase'.
Practice
Quiz
What is the primary function of an oxygenase?
FAQ
Frequently Asked Questions
No, it is a highly specialised scientific term used almost exclusively in biochemistry and related fields.
An oxygenase incorporates one or both atoms of molecular oxygen (O₂) into its substrate. An oxidase uses oxygen as an electron acceptor, typically producing water or hydrogen peroxide, without incorporating oxygen into the primary substrate.
No, it is strictly a noun. The related process is 'oxygenation', and one might say a substrate 'is oxygenated' by an oxygenase.
Monooxygenases (incorporate one oxygen atom; the other goes to water) and dioxygenases (incorporate both oxygen atoms into the substrate).