Literature DB >> 10994085

[Novel endoribonuclease activity of 26S-proteasomes from A-431 cells].

I N Evteeva1, V A Kulichkova, A G Mittenberg, I V Volkova, Iu B Ermolaeva, L V Teslenko, A D Obukhova, V A Penniiaĭnen, L N Gauze, I M Konstantinova.   

Abstract

Our analysis detected in 26S proteasomes of human A-431 cells a strong endoribonuclease activity, degrading cytoplasmic high-molecular-mass RNA, particularly, specific mRNAs. Enzymatic nature of this activity has been confirmed, and the optimal conditions studied. This endonuclease activity of proteasomes has not been earlier observed. Proteasome involvement in the stability control of specific messenger RNA molecules is suggested, and proteasome participation in the coordinated control of various stages of gene expression is discussed.

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Year:  2000        PMID: 10994085

Source DB:  PubMed          Journal:  Tsitologiia        ISSN: 0041-3771


  1 in total

1.  Specificity of the proteasome population secreted from cells into the culture medium.

Authors:  V A Kulichkova; A G Mittenberg; Y u B Ermolaeva; A S Tsimokha; I V Volkova; I N Evteeva; I V Kozyukharova; L N Gauze; I M Konstantinova
Journal:  Dokl Biol Sci       Date:  2004 Nov-Dec
  1 in total

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