adenylate cyclase
Very LowTechnical/Scientific
Definition
Meaning
An enzyme that converts adenosine triphosphate (ATP) to cyclic adenosine monophosphate (cAMP).
A membrane-bound enzyme that plays a crucial role in cellular signal transduction by producing cAMP, a second messenger that regulates various physiological processes including metabolism, gene expression, and cell growth.
Linguistics
Semantic Notes
The term is a compound noun specific to biochemistry and molecular biology. It refers exclusively to the enzyme and its function; it is not used metaphorically.
Dialectal Variation
British vs American Usage
Differences
No significant lexical or spelling differences. Pronunciation may vary slightly.
Connotations
Identical technical connotations in both varieties.
Frequency
Equally rare and confined to specialist literature in both regions.
Vocabulary
Collocations
Grammar
Valency Patterns
Adenylate cyclase is activated by [agent].The [substance] inhibits adenylate cyclase.Adenylate cyclase converts [ATP] into [cAMP].Vocabulary
Synonyms
Neutral
Weak
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 molecular biology and medical science discussions of cellular signalling.
Examples
By Part of Speech
adjective
British English
- The adenylate cyclase pathway is complex.
- We studied the adenylate cyclase mechanism.
American English
- The adenylate cyclase pathway is complex.
- We studied the adenylate cyclase mechanism.
Examples
By CEFR Level
- Adenylate cyclase is an important enzyme in the body.
- Some hormones work by activating adenylate cyclase.
- G-protein coupled receptors often signal through adenylate cyclase to elevate intracellular cAMP levels.
- Forskolin is a direct activator of adenylate cyclase, bypassing membrane receptors.
Learning
Memory Aids
Mnemonic
Think: ADENylate makes the cycle (cyclase) of cAMP.
Conceptual Metaphor
A cellular 'switch' or 'amplifier' that translates an external signal (first messenger) into an internal one (second messenger).
Watch out
Common Pitfalls
Translation Traps (for Russian speakers)
- Avoid literal translation of 'cyclase' as 'циклаза'. The standard Russian term is 'аденилатциклаза' or 'аденилилциклаза'.
Common Mistakes
- Misspelling as 'adenylate cyclise' (verb form).
- Confusing it with 'adenosine deaminase', a different enzyme.
- Using it as a countable noun in plural form without context (e.g., 'three adenylate cyclases' is rare).
Practice
Quiz
What is the primary function of adenylate cyclase?
FAQ
Frequently Asked Questions
Yes, these are synonymous terms for the same enzyme, though 'adenylyl cyclase' is often considered more chemically precise.
It is found in the cell membranes of most animal cells and is crucial for translating extracellular signals into intracellular responses.
The 'fight-or-flight' response. Adrenaline activates adenylate cyclase in liver and muscle cells, leading to cAMP production and the breakdown of glycogen for energy.
It is a key target for many drugs. For example, some asthma medications aim to activate adenylate cyclase in airway muscles to promote relaxation and easier breathing.