Difference between revisions of "Team:CPU CHINA/Improve"
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Revision as of 00:04, 18 October 2018
Part improvement
Hepatitis C virus nonstructural protein 5B (NS5B) , is a RNA-dependent RNA polymerase, which initiates de novo RNA synthesis with the help of its specific RNA promoters. In our project, the RNA interference is conditional because the pri-miRNA analogue partially paired with an inhibitory stranded is unable to be processed by Drosha. Once NS5B is introduced to catalyze a substitutional hybridation to release the pri-miRNA in the nucleus, the analogue get to evolve into miRNA and interfere with the target gene product.
Since the existent NS5B from Standard Parts collection which can not translocate into the nucleus does not suit our needs, we tend to design our own part that is able to do its job in the nucleus. After deep consideration, we decided to improve the function of the part submitted by iGEM14 Warwick (BBa K1442028). We load a nuclear location sequence (NLS) to the N terminal of NS5B (NS5BNLS) to transport the RdRP into the nucleus (BBa K2624002). We demonstrate this improvement by indirect immunofluorescence. As the following figure shows, NS5B with NLS (NLS+) have a higher ability of nuclear translocation than NS5B without NLS (NLS-).
Since the existent NS5B from Standard Parts collection which can not translocate into the nucleus does not suit our needs, we tend to design our own part that is able to do its job in the nucleus. After deep consideration, we decided to improve the function of the part submitted by iGEM14 Warwick (BBa K1442028). We load a nuclear location sequence (NLS) to the N terminal of NS5B (NS5BNLS) to transport the RdRP into the nucleus (BBa K2624002). We demonstrate this improvement by indirect immunofluorescence. As the following figure shows, NS5B with NLS (NLS+) have a higher ability of nuclear translocation than NS5B without NLS (NLS-).
