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| Content Provider | World Health Organization (WHO)-Global Index Medicus |
|---|---|
| Author | Liere, Karsten Weihe, Andreas Börner, Thomas |
| Description | Country affiliation: Germany Author Affiliation: Liere K ( Institut für Biologie/Genetik, Humboldt-Universität zu Berlin, Chausseestrasse 117, Berlin, Germany.) |
| Abstract | Although genomes of mitochondria and plastids are very small compared to those of their bacterial ancestors, the transcription machineries of these organelles are of surprising complexity. With respect to the number of different RNA polymerases per organelle, the extremes are represented on one hand by chloroplasts of eudicots which use one bacterial-type RNA polymerase and two phage-type RNA polymerases to transcribe their genes, and on the other hand by Physcomitrella possessing three mitochondrial RNA polymerases of the phage type. Transcription of genes/operons is often driven by multiple promoters in both organelles. This review describes the principle components of the transcription machineries (RNA polymerases, transcription factors, promoters) and the division of labor between the different RNA polymerases. While regulation of transcription in mitochondria seems to be only of limited importance, the plastid genes of higher plants respond to exogenous and endogenous cues rather individually by altering their transcriptional activities. |
| File Format | HTM / HTML |
| ISSN | 01761617 |
| Issue Number | 12 |
| Volume Number | 168 |
| e-ISSN | 16181328 |
| Journal | Journal of Plant Physiology |
| Language | English |
| Publisher | Elsevier |
| Publisher Date | 2011-08-15 |
| Publisher Place | Germany |
| Access Restriction | One Nation One Subscription (ONOS) |
| Subject Keyword | Discipline Botany Chloroplasts Genetics Gene Expression Regulation, Plant Mitochondria Plants Transcription, Genetic Enzymology Models, Biological Journal Article Research Support, Non-u.s. Gov't Review |
| Content Type | Text |
| Resource Type | Article |
| Subject | Physiology Plant Science Agronomy and Crop Science |
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