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- W1544296870 abstract "클라미도모나스 (Chlamydomonas reinhardtii)에서 Tombus 바이러스의 p19 유전자가 RNAi suppressor로서 기능하는 지는 조사하기 위하여 형질전환을 수행하였다. Southern분석을 통하여 p19 유전자가 1 copy에서 여러 copy로 도입된 형질전환체를 선발하였다. MAA7 유전자의 3'UTR 부위의 inverted repeat (IR) DNA가 형질전환되어 제작된 #33 strain을 p19유전자로 다시 형질전환 한 결과, MAA7 mRNA의 발현 양이 변하여 일정하지 않고 교란되었으며, 5-FI가 첨가된 배지에서 증식이 저해되었다. 증식이 저해된 것은 p19 유전자에 의한 silencing의 suppression이 일어난 것으로 간주할 수 있다. 그러나 MAA7 mRNA의 발현양이 전반적으로 증가하지 않고 발현양의 교란이 일어났으므로 p19 유전자에 의한 silencing의 suppression으로 보기 어렵다. 따라서 본 연구에 사용된 p19 유전자가 클라미도모나스에서는 codon usage가 상이하여 단백질 발현양이 충분치 않아서 silencing의 suppression을 완전하게 하지 못하거나 고등식물에서 일어나는 방식과는 다른 방식으로 suppression한다고 할 수 있다. Chlamydomonas reinhardtii was transformed with the coding sequence of the Tombus virus gene p19 to determine whether the gene functions as an RNAi suppressor in C. reinhardtii. Transformants were confirmed to have 1 to several copies of p19 gene in their chromosomes. When an RNAi strain of C. reinhardtii generated by transforming the inverted repeat (IR) sequence homologous to the 3'UTR region of the MAA7 gene was re-transformed with the gene p19, MAA7 transcript levels of transformants fluctuated and proliferation of trans-formants on the medium containing 5-FI was suppressed. Overall results suggest that p19-mediated silencing suppression works at a low level in C. reinhardtii because of difference in codon usage resulting in weak P19 expression unless p19-mediated silencing suppression in C. reinhardtii works in a different manner from higher plants." @default.
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- W1544296870 date "2007-12-31" @default.
- W1544296870 modified "2023-09-26" @default.
- W1544296870 title "Genetic Transformation of Chlamydomonas reinhardtii with the RNAi Suppressor p19 Gene of Tombus Virus" @default.
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- W1544296870 doi "https://doi.org/10.5010/jpb.2007.34.4.307" @default.
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