2004年9月10日
Facilitation of proteasomal degradation of p27Kip1 by N-terminal cleavage and their sequence requirements
FEBS Letters
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- 巻
- 574
- 号
- 1-3
- 開始ページ
- 111
- 終了ページ
- 115
- DOI
- 10.1016/j.febslet.2004.08.014
The sequence requirement for N-terminal cleavage and the proteasomal degradation of p27Kip1 and their relationship was investigated. Residues 5-8 were required for the cleavage and the mutation of S10 to E inhibited the cleavage. The C-terminal PEST sequence was necessary for the degradation and residue R165 was found to play an important role in the degradation. The inhibition of the cleavage by deleting residues 5-8 inhibited the degradation, while the fragment mimicking the cleavage product accelerated the degradation. Both the cleavage and degradation demonstrated a similar sensitivity toward proteasome inhibitors and ATP depletion. These two processes are thus suggested to be tightly linked and sequential. © 2004 Federation of European Biochemical Societies. Published by Elsevier B.V. All rights reserved.
- リンク情報
- ID情報
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- DOI : 10.1016/j.febslet.2004.08.014
- ISSN : 0014-5793
- PubMed ID : 15358549
- SCOPUS ID : 4444282575