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endonuclease

Advanced (C1/C2)

IPA: /ˌɛn.dəˈnjuː.kleɪz/

KK: /ˌɛn.dəˈnuː.kleɪs/

noun
Definition

A type of enzyme that helps break down nucleic acids by cutting the bonds between the building blocks of DNA or RNA inside the molecule.


Example

Researchers used an endonuclease to analyze the DNA fragments more effectively.


Conversation
Sloth A
Have you heard about the role of endonuclase in DNA research?
Sloth B
Yeah, it's pretty fascinating how it helps break down nucleotide chains.
Sloth A
Exactly! I read that it can cleave internal covalent bonds too.
Sloth B
Right, which makes it crucial for understanding genetic processes.

Synonyms & Antonyms
Synonyms
enzyme
catalyst
biocatalyst
Antonyms
inhibitor
blocker
suppressor
Root Explanation

Endonuclease → It is formed from "endo-" (meaning within) and "nuclease" (from "nucleus", meaning kernel or core, and "-ase", a suffix used for enzymes). The word refers to an enzyme that acts within the nucleus to cleave the bonds between nucleotides in nucleic acids.

Memory Tip

Think of an enzyme that works 'within' ('endo-') the 'core' ('nucleus') of the cell to cut nucleic acids.

Visually Confused Words
nuclease
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