mannose
LowTechnical/Scientific
Definition
Meaning
A hexose sugar, an epimer of glucose, with the formula C₆H₁₂O₆.
A monosaccharide sugar that is a C-2 epimer of glucose, important in human metabolism and occurring naturally in some fruits and plant mannans and gums. It is a component of many glycoproteins and glycolipids and plays roles in cell recognition and immune system function.
Linguistics
Semantic Notes
The term is almost exclusively used in biochemical, medical, and nutritional contexts. It belongs to a closed set of monosaccharide names ending in '-ose' (e.g., glucose, fructose, galactose).
Dialectal Variation
British vs American Usage
Differences
No significant lexical or usage differences exist. Spelling and meaning are identical.
Connotations
Neutral scientific term in both varieties.
Frequency
Equally low-frequency and specialized in both UK and US English.
Vocabulary
Collocations
Grammar
Valency Patterns
[Noun] + of + mannose[Adjective] + mannosemannose + [Noun]Vocabulary
Synonyms
Weak
Usage
Context Usage
Business
Extremely rare, possibly only in the context of pharmaceutical or supplement product specifications.
Academic
Common in biochemistry, molecular biology, immunology, and nutritional science literature and lectures.
Everyday
Virtually never used in casual conversation.
Technical
The primary register. Used in research papers, laboratory protocols, clinical studies, and technical data sheets related to carbohydrates, glycobiology, and urinary tract health supplements.
Examples
By Part of Speech
adjective
British English
- The mannose-rich glycoprotein was isolated.
- They studied the mannose-binding properties.
American English
- The mannose-specific lectin was purified.
- We observed a mannose-dependent response.
Examples
By CEFR Level
- Some fruits contain a small amount of mannose.
- Mannose is a type of simple sugar.
- The doctor recommended a D-mannose supplement for her recurrent cystitis.
- This receptor specifically recognises mannose residues on the pathogen's surface.
- The aberrant glycosylation resulted in an underrepresentation of high-mannose glycans on the cell surface.
- Mannose metabolism via the pentose phosphate pathway provides precursors for nucleotide synthesis.
Learning
Memory Aids
Mnemonic
Think of 'MANNose' – a sugar important for the 'manners' (proper function) of cells, or that it's the 'manna' (a biblical food) among sugars for certain bodily processes.
Conceptual Metaphor
Mannose is often conceptualized as a KEY or a TAG (for cellular recognition and targeting) and as a BUILDING BLOCK (for constructing complex molecules).
Watch out
Common Pitfalls
Translation Traps (for Russian speakers)
- Do not confuse with 'манометр' (manometer, a pressure gauge).
- The '-ose' ending reliably indicates a sugar, similar to Russian '-оза' as in 'глюкоза'.
Common Mistakes
- Misspelling as 'manose', 'manosse', or 'manose'.
- Mispronouncing the first syllable like 'man' in 'manager' instead of 'man' in 'manual'.
- Incorrectly classifying it as a protein or fat instead of a carbohydrate.
Practice
Quiz
Mannose is primarily classified as a:
FAQ
Frequently Asked Questions
No, they are different hexose sugars. Mannose is a C-2 epimer of glucose, meaning their structures differ at the second carbon atom.
Yes, but in small amounts. It is found in fruits like cranberries, apples, and peaches, as well as in some beans and algae.
D-mannose is commonly used as a dietary supplement to help support urinary tract health by preventing certain bacteria from adhering to the bladder walls.
While generally considered safe, it can affect blood sugar levels. People with diabetes or metabolic disorders should consult a healthcare professional before using mannose supplements.