chromoprotein: meaning, definition, pronunciation and examples
Low/Very Low (C2 Level)Exclusively scientific/technical. Used in biochemistry, molecular biology, and physiology contexts.
Quick answer
What does “chromoprotein” mean?
A protein that contains a pigmented prosthetic group (chromophore) responsible for its colour.
Audio
Pronunciation
Definition
Meaning and Definition
A protein that contains a pigmented prosthetic group (chromophore) responsible for its colour.
In biochemistry, a conjugated protein where the non-protein component (like a heme or carotenoid) gives the molecule its distinctive colour and often plays a crucial role in its biological function, such as in oxygen transport, light absorption, or electron transfer.
Dialectal Variation
British vs American Usage
Differences
No significant differences in meaning or usage. Spelling is consistent.
Connotations
None beyond its precise scientific definition.
Frequency
Equally low and specialised in both dialects, confined to academic and research literature.
Grammar
How to Use “chromoprotein” in a Sentence
The chromoprotein binds to [ligand/metal ion].Researchers purified the chromoprotein from [source].[Chromophore] is the prosthetic group of this chromoprotein.Vocabulary
Collocations
Examples
Examples of “chromoprotein” in a Sentence
noun
British English
- The haemoglobin in your blood is a classic respiratory chromoprotein.
- Their research focuses on the novel chromoprotein found in the archaeon.
American English
- Phycoerythrin, a light-harvesting chromoprotein, is crucial for cyanobacteria.
- The experiment aimed to characterize the chromoprotein's binding kinetics.
Usage
Meaning in Context
Business
Not used.
Academic
Primary context. Used in research papers, textbooks, and lectures in biochemistry and related life sciences.
Everyday
Never used.
Technical
The only context. Describes a specific class of biomolecules in laboratory and research settings.
Vocabulary
Synonyms of “chromoprotein”
Strong
Neutral
Vocabulary
Antonyms of “chromoprotein”
Watch out
Common Mistakes When Using “chromoprotein”
- Misspelling as 'chromoprotain' or 'chromoprotien'.
- Using it to refer to any coloured biological substance, rather than specifically a protein with a bound chromophore.
- Confusing it with 'chromatin' or 'chromosome'.
FAQ
Frequently Asked Questions
No. A chromoprotein is a specific type of protein that *contains* a pigment (the chromophore) as part of its structure. The pigment alone is not a protein.
No, by definition. The prefix 'chromo-' refers to colour. If the chromophore is removed or altered so the colour is lost, it ceases to be a chromoprotein in the functional sense.
Chlorophyll itself is the chromophore (pigment). It is bound to proteins in the chloroplast to form light-harvesting complexes, which *are* chromoproteins. So, chlorophyll is the chromophore *within* a chromoprotein system.
Completely different. 'Chromatin' refers to the DNA-protein complex in the cell nucleus. 'Chromoprotein' is a chemical classification for a type of protein molecule that has a coloured component. They share the Greek root 'chroma' (colour) but refer to distinct entities.
A protein that contains a pigmented prosthetic group (chromophore) responsible for its colour.
Chromoprotein is usually exclusively scientific/technical. used in biochemistry, molecular biology, and physiology contexts. in register.
Chromoprotein: in British English it is pronounced /ˌkrəʊməʊˈprəʊtiːn/, and in American English it is pronounced /ˌkroʊmoʊˈproʊtiːn/. Tap the audio buttons above to hear it.
Learning
Memory Aids
Mnemonic
Think of 'chromo-' (colour, as in chromosome) + 'protein'. A colour-protein.
Conceptual Metaphor
A specialised tool with a coloured component; the colour indicates its specific function and identity within the cellular workshop.
Practice
Quiz
Which of the following is a defining characteristic of a chromoprotein?