| Budget Amount *help |
¥19,370,000 (Direct Cost: ¥14,900,000、Indirect Cost: ¥4,470,000)
Fiscal Year 2015: ¥2,860,000 (Direct Cost: ¥2,200,000、Indirect Cost: ¥660,000)
Fiscal Year 2014: ¥4,030,000 (Direct Cost: ¥3,100,000、Indirect Cost: ¥930,000)
Fiscal Year 2013: ¥12,480,000 (Direct Cost: ¥9,600,000、Indirect Cost: ¥2,880,000)
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| Outline of Final Research Achievements |
We investigated the end processing and degradation of premature tRNAs in a eukaryotic cell extract, which led to the development of a novel type of molecule-responsive gene regulation system called "pseudo-riboswitch" that harnesses the maturation of a premature tRNA probe for a target molecule. This system has the advantage not only in being able to be rationally constructed to respond to an arbitrary molecule but also in generally exhibiting higher switching efficiency than previously reported artificial gene regulation systems, by virtue of its unique mechanism. In addition, we modified this pseudo-riboswitch system to develop biosensors for detecting nucleic acids with high sensitivity and specificity. Moreover, we rationally optimized a tRNA probe framework for introducing a non-natural amino acid into a protein. We also identified an untranslated region of mRNA that enhances translation in the ON state.
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