oxidoreductase
Very LowTechnical/Scientific
Definition
Meaning
An enzyme that catalyzes a reaction involving the simultaneous transfer of electrons (a redox reaction).
A broad class of enzymes essential in biological processes like cellular respiration and photosynthesis, where one molecule is oxidized (loses electrons) and another is reduced (gains electrons).
Linguistics
Semantic Notes
A superordinate term for enzymes like dehydrogenases, oxidases, peroxidases, and reductases. The name describes its function (oxide + reduce + -ase).
Dialectal Variation
British vs American Usage
Differences
No significant differences in meaning or spelling. Pronunciation may follow regional patterns for the components 'oxide' and 'reductase'.
Connotations
Purely technical, with no cultural or idiomatic connotations in either variety.
Frequency
Extremely rare outside biochemistry and molecular biology contexts in both regions.
Vocabulary
Collocations
Grammar
Valency Patterns
[oxidoreductase] + [that/which] + verb (catalyses, facilitates)[Specific oxidoreductase] + acts on + [substrate][The] + activity of + [oxidoreductase]Vocabulary
Synonyms
Strong
Neutral
Weak
Vocabulary
Antonyms
Usage
Context Usage
Business
Virtually never used.
Academic
Core term in biochemistry, molecular biology, and related life sciences.
Everyday
Never used in everyday conversation.
Technical
Precise, standard term for a major enzyme classification (EC 1).
Examples
By Part of Speech
adjective
British English
- The oxidoreductase function was impaired.
- An oxidoreductase complex was isolated.
American English
- The oxidoreductase activity was measured.
- An oxidoreductase pathway was identified.
Examples
By CEFR Level
- Succinate dehydrogenase is a crucial oxidoreductase in the Krebs cycle.
- Researchers are studying a new bacterial oxidoreductase.
- The mitochondrial oxidoreductase facilitated the transfer of electrons from NADH to ubiquinone.
- Kinetic analysis revealed that the novel oxidoreductase had a surprisingly high catalytic efficiency for its aromatic substrate.
Learning
Memory Aids
Mnemonic
Think: OXIDises one molecule and simultaneously REDUCES another – an OXIDO-REDUCT-ASE.
Conceptual Metaphor
A 'biological accountant' or 'electron shuttle manager' that meticulously transfers electrons between molecules.
Watch out
Common Pitfalls
Translation Traps (for Russian speakers)
- Avoid literal translation of parts ('окислительновосстановительный фермент' is correct but cumbersome). The established term is 'оксидоредуктаза'.
- Do not confuse with general 'reductase' or 'oxidase', which are subclasses.
Common Mistakes
- Misspelling as 'oxidoreductace' or 'oxidoreduktase'.
- Using it as a general term for any enzyme instead of specifically those catalyzing redox reactions.
Practice
Quiz
What is the primary function of an oxidoreductase?
FAQ
Frequently Asked Questions
No. Oxidase is a specific subtype of oxidoreductase that uses molecular oxygen as the electron acceptor. Oxidoreductase is the broader class.
They are used in industrial biotechnology, for example, in some diagnostic test strips (like glucose meters) and in the production of certain cheeses and biofuels.
Almost certainly not. It is a highly specialised term. In general contexts, you would describe the process (e.g., 'an enzyme that manages energy transfer') rather than name the class.
In the Enzyme Commission number system, 'EC 1' is the top-level classification for all oxidoreductases.