noun[mass noun] Biochemistry
A compound found in living cells which plays a role in the degradation of defective and superfluous proteins. It is a single-chain polypeptide.
- This suggests that independent protein degradation pathways for ubiquitin, as well as for the proteasome complex, may exist in strawberry fruit.
- The protein is linked to a second protein, ubiquitin, when the cell detects that DNA damage has occurred.
- Ubp3 is a deubiquitination enzyme and a member of a large family of cysteine proteases that cleave ubiquitin moieties from protein substrates.
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