dinucleotide: meaning, definition, pronunciation and examples
C2/Highly SpecializedTechnical/Scientific
Quick answer
What does “dinucleotide” mean?
A molecule consisting of two nucleotides linked together, forming the fundamental repeating structural unit of DNA and RNA.
Audio
Pronunciation
Definition
Meaning and Definition
A molecule consisting of two nucleotides linked together, forming the fundamental repeating structural unit of DNA and RNA.
In biochemistry and molecular biology, a compound of two nucleotides joined by a phosphodiester bond. It is also a common term for specific coenzymes, such as NAD+ (nicotinamide adenine dinucleotide).
Dialectal Variation
British vs American Usage
Differences
No significant spelling or usage differences. Pronunciation differs slightly (see IPA).
Connotations
Identical technical meaning in both dialects.
Frequency
Extremely rare outside scientific literature in both regions.
Grammar
How to Use “dinucleotide” in a Sentence
[det] + dinucleotide + [prep] + [noun] (e.g., the dinucleotide in the sequence)[adj] + dinucleotide + [noun] (e.g., adenine dinucleotide cofactor)[verb] + [det] + dinucleotide (e.g., hydrolyse the dinucleotide)Vocabulary
Collocations
Examples
Examples of “dinucleotide” in a Sentence
adjective
British English
- The dinucleotide composition was analysed.
- A dinucleotide-binding fold is characteristic of certain enzymes.
American English
- They studied the dinucleotide frequency patterns.
- The protein has a conserved dinucleotide recognition site.
Usage
Meaning in Context
Business
Virtually never used.
Academic
Exclusively used in advanced biochemistry, genetics, and molecular biology papers and textbooks.
Everyday
Never used.
Technical
Core term in molecular life sciences for describing nucleic acid structure and specific enzyme cofactors.
Vocabulary
Synonyms of “dinucleotide”
Vocabulary
Antonyms of “dinucleotide”
Watch out
Common Mistakes When Using “dinucleotide”
- Mispronouncing as 'di-nuke-leo-tide' instead of 'di-new-klee-o-tide'.
- Incorrectly using it as a general term for any small nucleic acid fragment.
- Misspelling as 'dynucleotide'.
FAQ
Frequently Asked Questions
A base pair (e.g., A-T, G-C) refers to two complementary nitrogenous bases held together by hydrogen bonds. A dinucleotide is a covalent chemical compound of two nucleotides (each consisting of a base, a sugar, and a phosphate), linked by a phosphodiester bond. A single DNA strand is a chain of dinucleotides (and larger polymers).
No. While it describes the structural unit of nucleic acids, its most frequent use is for specific, free metabolic coenzymes like NADH and FADH2, which are dinucleotides that are not part of a polymer chain.
The standard pronunciation is /daɪˈnjuːklɪətaɪd/ (UK) or /daɪˈnuːklɪətaɪd/ (US). The first syllable rhymes with 'eye' or 'die', the stress is on the second syllable ('NEW'), and the 'cleo' part is pronounced 'klee-oh'.
No, it is exclusively a noun (and can function as a noun adjunct in compound adjectives like 'dinucleotide sequence'). There is no verb form.
A molecule consisting of two nucleotides linked together, forming the fundamental repeating structural unit of DNA and RNA.
Dinucleotide is usually technical/scientific in register.
Learning
Memory Aids
Mnemonic
Think: 'DI' (two) + 'NUCLEOtide' = a two-nucleotide unit. Like a dimer of nucleotides.
Conceptual Metaphor
A 'link' or 'building block' in the chain of life's genetic information.
Practice
Quiz
What is a 'dinucleotide repeat' most associated with in genetics?