Ubiquitin
Nounयूबिक्विटिन
Definition
A small regulatory protein found in all eukaryotic cells that directs the degradation of damaged or unnecessary proteins.
Contextual Sentence: "Ubiquitin tags misfolded proteins for destruction in the proteasome."
💡 Memory Hook (Mnemonic): Sounds like 'ubiquity' + 'tin' – tin can be recycled, like ubiquitin recycles proteins.
Synonyms
regulatory protein