deamidase
C2Highly Technical/Scientific
Definition
Meaning
An enzyme that catalyzes the removal of an amide group from a compound, producing ammonia.
A general term for enzymes (e.g., glutaminase, asparaginase) that hydrolyze amide bonds in specific molecules like amino acids or nucleotides, playing crucial roles in nitrogen metabolism and cellular regulation.
Linguistics
Semantic Notes
Exclusively used in biochemistry, molecular biology, and related fields. The term is category-based, referring to a class of enzymes with a specific function, not a single enzyme.
Dialectal Variation
British vs American Usage
Differences
No significant differences in meaning or usage. Spelling remains identical.
Connotations
None beyond its strict biochemical definition.
Frequency
Extremely low frequency in both dialects, confined to specialized literature.
Vocabulary
Collocations
Grammar
Valency Patterns
The deamidase (Subject) + hydrolyses/cleaves/removes (Verb) + the amide group from (Object)A deamidase acting on glutamineVocabulary
Synonyms
Neutral
Weak
Vocabulary
Antonyms
Usage
Context Usage
Business
Virtually never used.
Academic
Exclusively in advanced biochemical, biomedical, or agricultural research papers and textbooks.
Everyday
Never used.
Technical
Core term in enzymology, metabolic pathway descriptions, and pharmaceutical research (e.g., developing enzyme inhibitors).
Examples
By Part of Speech
adjective
British English
- The deamidase function was localised to the nucleus.
- They identified a key deamidase domain.
American English
- The deamidase function was localized to the nucleus.
- They identified a key deamidase domain.
Examples
By CEFR Level
- The research focused on a novel bacterial deamidase capable of detoxifying certain herbicides.
- Mutations in the deamidase gene were linked to the metabolic disorder.
Learning
Memory Aids
Mnemonic
Think: 'DE-AMIDE-ase' – an enzyme that takes OFF (De-) an AMIDE group.
Conceptual Metaphor
A molecular pair of scissors specifically designed to cut off the 'amide' tag from a molecule.
Watch out
Common Pitfalls
Translation Traps (for Russian speakers)
- Do not confuse with "дезамидаза" (a direct transliteration) – ensure understanding of the biochemical function, not just the word form.
- Not to be conflated with "амидаза" (amidase), which may have a broader or slightly different substrate specificity.
Common Mistakes
- Mispronouncing it as 'dee-am-i-days' /diːˈæmɪdeɪz/ instead of the standard 'dee-AM-id-ase' /diˈæmɪdeɪz/.
- Using it as a general term for any amide-bond cleaving enzyme without specifying the substrate.
- Incorrect plural: 'deamidases' (correct) vs. 'deamidase' (incorrect for plural).
Practice
Quiz
In which field would you most likely encounter the term 'deamidase'?
FAQ
Frequently Asked Questions
Not exactly. While both hydrolyse amide bonds, 'deamidase' typically refers to enzymes acting on amides in amino acids (like glutamine) or nucleotides, often within a biological macromolecule. 'Amidase' can be a broader term for enzymes acting on simple amides like acetamide.
Yes. Glutaminase is a specific and well-studied deamidase that converts the amino acid glutamine to glutamic acid, releasing ammonia.
It is critical for nitrogen metabolism, amino acid recycling, cellular signalling (e.g., via glutamate), and the post-translational modification of proteins, which regulates their function.
No. It is a highly specialized scientific term. You will only encounter it in advanced academic or professional contexts within the life sciences.