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FEBS Lett. 2004 Feb 27;560(1-3):81-5.

RpS3, a DNA repair endonuclease and ribosomal protein, is involved in apoptosis.

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  • 1Laboratory of Biochemistry, School of Life Sciences & Biotechnology, and BioInstitute, Korea University, Seoul 136-701, South Korea.

Abstract

It is known that mammalian rpS3 functions as a DNA repair endonuclease and ribosomal protein S3. It was also observed that several ribosomal proteins or DNA repair enzymes are related to apoptosis. We report here a third function of rpS3, induction of apoptosis. The localization of green fluorescent protein (GFP)-rpS3 is changed to the nuclear membrane when lymphocytic cells undergo rpS3-induced apoptosis. Transient expression of GFP-rpS3 activates caspase-8/caspase-3 and sensitizes cytokine-induced apoptosis. Deletion analysis reveals that the two functions of rpS3, DNA repair and apoptosis, use independent functional domains.

PMID:
14988002
[PubMed - indexed for MEDLINE]
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