N-terminal acetylation of cellular proteins creates specific degradation signals.
N-terminal acetylation of cellular proteins creates specific degradation signals.
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DOI:
10.1126/science.1183147
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发表时间:
2010-02-19
期刊:
影响因子:
--
通讯作者:
Varshavsky A
中科院分区:
文献类型:
--
作者:
Hwang CS;Shemorry A;Varshavsky A
The retained N-terminal methionine (Met) residue of a nascent protein is often N-terminally acetylated (Nt-acetylated). Removal of N-terminal Met by Met-aminopeptidases frequently leads to Nt-acetylation of the resulting N-terminal Ala, Val, Ser, Thr and Cys residues. Although a majority of eukaryotic proteins, for example, more than 80% of human proteins, are cotranslationally Nt-acetylated, the function of this extensively studied modification is largely unknown. Here we found, using the yeast Saccharomyces cerevisiae, that the Nt-acetylated Met residue could act as a degradation signal (degron), targeted by the Doa10 ubiquitin ligase. Moreover, Doa10 also recognized the Nt-acetylated Ala, Val, Ser, Thr and Cys residues. Several examined proteins of diverse functions contained these N-terminal degrons, termed AcN-degrons, which comprise a prevalent class of degradation signals in cellular proteins.
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影响因子:
64.5
作者:
HOCHSTRASSER, M;VARSHAVSKY, A
通讯作者:
VARSHAVSKY, A
影响因子:
7
作者:
Frottin, Frederic;Martinez, Aude;Meinnel, Thierry
通讯作者:
Meinnel, Thierry
影响因子:
64.5
作者:
CHEN, P;JOHNSON, P;HOCHSTRASSER, M
通讯作者:
HOCHSTRASSER, M
影响因子:
56.9
作者:
MAYER, A;SIEGEL, NR;CIECHANOVER, A
通讯作者:
CIECHANOVER, A
影响因子:
4.1
作者:
Hassink, G;Kikkert, M;Wiertz, E
通讯作者:
Wiertz, E