RelE, a global inhibitor of translation, is activated during nutritional stress
نویسندگان
چکیده
منابع مشابه
RelE, a global inhibitor of translation, is activated during nutritional stress.
The stringent response is defined as the physiological changes elicited by amino acid starvation. Many of these changes depend on the regulatory nucleotide ppGpp (guanosine tetraphosphate) synthesized by RelA (ppGpp synthetase I), the relA-encoded protein. The second rel locus of Escherichia coli is called relBE and encodes RelE cytotoxin and RelB antitoxin. RelB counteracts the toxic effect of...
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Type II toxin-antitoxin (TA) modules are thought to mediate stress-responses by temporarily suppressing protein synthesis while cells redirect transcription to adapt to environmental change. Here, we show that YoeB, a ribosome-dependent mRNase toxin, is activated in Escherichia coli cells grown at elevated temperatures. YoeB activation is dependent on Lon protease, suggesting that thermal stres...
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چکیده ندارد.
15 صفحه اولTranslation inhibitor Pdcd4 is targeted for degradation during tumor promotion.
Inactivation of tumor suppressors is among the rate-limiting steps in carcinogenesis that occur during the tumor promotion stage. The translation inhibitor programmed cell death 4 (Pdcd4) suppresses tumorigenesis and invasion. Although Pdcd4 is not mutationally inactivated in human cancer, the mechanisms controlling Pdcd4 inactivation during tumorigenesis remain elusive. We report that tumor pr...
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ژورنال
عنوان ژورنال: Proceedings of the National Academy of Sciences
سال: 2001
ISSN: 0027-8424,1091-6490
DOI: 10.1073/pnas.251327898