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Glutamyl-tRNA mediates a switch in RNA polymerase use during chloroplast biogenesis.
| Content Provider | Semantic Scholar |
|---|---|
| Author | Hanaoka, Mitsumasa Kanamaru, Kengo Fujiwara, Makoto T. Takahashi, Hideo Tanaka, Kan |
| Copyright Year | 2005 |
| Abstract | Chloroplast genes of higher plants are transcribed by two types of RNA polymerase that are encoded by nuclear (NEP (nuclear-encoded plastid RNA polymerase)) or plastid (PEP (plastid-encoded plastid RNA polymerase)) genomes. NEP is largely responsible for the transcription of housekeeping genes during early chloroplast development. Subsequent light-dependent chloroplast maturation is accompanied by repression of NEP activity and activation of PEP. Here, we show that the plastid-encoded transfer RNA for glutamate, the expression of which is dependent on PEP, directly binds to and inhibits the transcriptional activity of NEP in vitro. The plastid tRNA(Glu) thus seems to mediate the switch in RNA polymerase usage from NEP to PEP during chloroplast development. |
| File Format | PDF HTM / HTML |
| Alternate Webpage(s) | http://embor.embopress.org/content/embor/6/6/545.full.pdf |
| PubMed reference number | 15877080v1 |
| Volume Number | 6 |
| Issue Number | 6 |
| Journal | EMBO reports |
| Language | English |
| Access Restriction | Open |
| Subject Keyword | Biologic Development Chloroplast Proton-Translocating ATPases Chloroplasts DNA-Directed RNA Polymerase Genes, Homeobox Genome Glutamic Acid Glutamic Acid-Specific tRNA Plastids Repression, Psychology Transcription, Genetic negative regulation of RNA-directed RNA polymerase activity |
| Content Type | Text |
| Resource Type | Article |
