期刊
BIOESSAYS
卷 41, 期 11, 页码 -出版社
WILEY
DOI: 10.1002/bies.201800167
关键词
N-degron; N-end rule; N-terminal acetylation; posttranslational modifications; protein degradation; proteolysis; ubiquitin
资金
- Parkinson Canada
The N-end rule denotes the relationship between the identity of the amino-terminal residue of a protein and its in vivo half-life. Since its discovery in 1986, the N-end rule has generally been described by a defined set of rules for determining whether an amino-terminal residue is stabilizing or not. However, recent studies are revealing that this N-end rule (or N-degron concept) is less straightforward than previously appreciated. For instance, it is unveiled that N-terminal acetylation of N-terminal residues may create a degradation signal (Ac-degron) that promotes the degradation of target proteins. A recent high-throughput dissection of degrons in yeast proteins amino termini intriguingly suggested that the hydrophobicity of amino-terminal residues-but not the N-terminal acetylation status-may be the indispensable feature of amino-terminal degrons. Herein, these recent advances in N-terminal acetylation and the complexity of N-terminal degradation signals in the context of the N-degron pathway are analyzed.
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