cyclase
Very LowTechnical/Scientific
Definition
Meaning
An enzyme that catalyzes the formation of a cyclic compound.
A class of enzymes that convert linear molecules into cyclic structures, often involved in important biological signaling pathways such as those producing cyclic AMP or cyclic GMP.
Linguistics
Semantic Notes
The term is almost exclusively used in biochemistry, molecular biology, and pharmacology. It typically appears as a suffix in compound enzyme names (e.g., adenylate cyclase, guanylate cyclase).
Dialectal Variation
British vs American Usage
Differences
No significant differences in meaning or usage. Spelling and pronunciation follow standard conventions for scientific terminology.
Connotations
Purely technical with no regional connotations.
Frequency
Equally rare and specialised in both varieties, confined to scientific literature and discourse.
Vocabulary
Collocations
Grammar
Valency Patterns
[Noun] cyclasecyclase [verb] [noun]cyclase is [adjective]Vocabulary
Synonyms
Neutral
Weak
Vocabulary
Antonyms
Usage
Context Usage
Business
Not used.
Academic
Used in biochemistry, pharmacology, and cell biology research papers and textbooks.
Everyday
Not used.
Technical
Core term in descriptions of signal transduction, second messenger systems, and enzyme mechanisms.
Examples
By Part of Speech
adjective
British English
- The cyclase activity was measured spectrophotometrically.
- A cyclase-dependent mechanism was proposed.
American English
- The cyclase activity was measured using a spectrometer.
- A cyclase-dependent pathway was identified.
Examples
By CEFR Level
- Adenylate cyclase is an important enzyme in cell signaling.
- Researchers studied how the drug affects cyclase function.
- The membrane-bound guanylate cyclase acts as a receptor for atrial natriuretic peptide.
- Inhibition of soluble adenylate cyclase disrupts the cAMP signalling cascade in the pathogen.
Learning
Memory Aids
Mnemonic
Think 'cycle' + 'ase' (enzyme suffix). An enzyme that makes a chemical cycle.
Conceptual Metaphor
MACHINE/TOOL: A cyclase is a molecular machine that twists a straight molecule into a ring.
Watch out
Common Pitfalls
Translation Traps (for Russian speakers)
- Avoid translating as "циклаза" without context; the standard term is often a calque like "аденилатциклаза" for the specific enzyme.
- Do not confuse with words related to 'cycle' in a general or mechanical sense (e.g., велосипед).
Common Mistakes
- Using 'cyclase' as a standalone noun without a modifier (e.g., 'the cyclase' is too vague; specify 'adenylate cyclase').
- Misspelling as 'cyclaze' or 'cyclace'.
- Incorrect stress placement (stress is on the first syllable: CY-clase).
Practice
Quiz
In which field is the term 'cyclase' primarily used?
FAQ
Frequently Asked Questions
No, it is a highly specialised scientific term used almost exclusively in biochemistry and related fields.
No, 'cyclase' is exclusively a noun referring to a class of enzymes. The related verb would be 'cyclize'.
Adenylate cyclase (also called adenylyl cyclase), which produces the second messenger cyclic AMP, is one of the most well-studied.
The suffix '-ase' is standard in biochemistry for naming enzymes. It denotes that the molecule is a protein catalyst.