A RNA polymerase with transcriptional activity at 0°C from the Antarctic bacterium Pseudomonas syringae
A DNA-dependent RNA polymerase was purified from the Antarctic psychrotrophic bacterium Pseudomonas syringae. The RNA polymerase showed a typical eubacterial subunit composition with β, β', α 2 and s subunits. The subunits cross-reacted with antibodies raised against holoenzyme and the individu...
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ftindianacasci:oai:repository.ias.ac.in:64319 2023-05-15T13:46:14+02:00 A RNA polymerase with transcriptional activity at 0°C from the Antarctic bacterium Pseudomonas syringae Uma, S. Jadhav, R. S. Seshu Kumar, G. Shivaji, S. Ray, M. K. 1999-06-25 http://repository.ias.ac.in/64319/ http://www.sciencedirect.com/science/article/pii/S0014579399006602 unknown Elsevier Science Uma, S. Jadhav, R. S. Seshu Kumar, G. Shivaji, S. Ray, M. K. (1999) A RNA polymerase with transcriptional activity at 0°C from the Antarctic bacterium Pseudomonas syringae FEBS Letters, 453 (3). pp. 313-317. ISSN 0014-5793 QL Zoology Article PeerReviewed 1999 ftindianacasci 2013-01-20T12:25:37Z A DNA-dependent RNA polymerase was purified from the Antarctic psychrotrophic bacterium Pseudomonas syringae. The RNA polymerase showed a typical eubacterial subunit composition with β, β', α 2 and s subunits. The subunits cross-reacted with antibodies raised against holoenzyme and the individual subunits of the RNA polymerase of Escherichia coli. However, the enzyme was considered unique, since unlike the RNA polymerase of mesophilic E. coli it exhibited significant and consistent transcriptional activity (10-15%) even at 0°C. But, similar to the enzyme from the mesophilic bacterium, the RNA polymerase from P. syringae exhibited optimum activity at 37°C. The study also demonstrates that the RNA polymerase of P. syringae could preferentially transcribe the cold-inducible gene cspA of E. coli only at lower temperatures (0-22°C). The polymerase was also observed to be relatively more rifampicin-resistant during transcription at lower temperature. Article in Journal/Newspaper Antarc* Antarctic Indian Academy of Sciences: Publication of Fellows Antarctic The Antarctic |
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Indian Academy of Sciences: Publication of Fellows |
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ftindianacasci |
language |
unknown |
topic |
QL Zoology |
spellingShingle |
QL Zoology Uma, S. Jadhav, R. S. Seshu Kumar, G. Shivaji, S. Ray, M. K. A RNA polymerase with transcriptional activity at 0°C from the Antarctic bacterium Pseudomonas syringae |
topic_facet |
QL Zoology |
description |
A DNA-dependent RNA polymerase was purified from the Antarctic psychrotrophic bacterium Pseudomonas syringae. The RNA polymerase showed a typical eubacterial subunit composition with β, β', α 2 and s subunits. The subunits cross-reacted with antibodies raised against holoenzyme and the individual subunits of the RNA polymerase of Escherichia coli. However, the enzyme was considered unique, since unlike the RNA polymerase of mesophilic E. coli it exhibited significant and consistent transcriptional activity (10-15%) even at 0°C. But, similar to the enzyme from the mesophilic bacterium, the RNA polymerase from P. syringae exhibited optimum activity at 37°C. The study also demonstrates that the RNA polymerase of P. syringae could preferentially transcribe the cold-inducible gene cspA of E. coli only at lower temperatures (0-22°C). The polymerase was also observed to be relatively more rifampicin-resistant during transcription at lower temperature. |
format |
Article in Journal/Newspaper |
author |
Uma, S. Jadhav, R. S. Seshu Kumar, G. Shivaji, S. Ray, M. K. |
author_facet |
Uma, S. Jadhav, R. S. Seshu Kumar, G. Shivaji, S. Ray, M. K. |
author_sort |
Uma, S. |
title |
A RNA polymerase with transcriptional activity at 0°C from the Antarctic bacterium Pseudomonas syringae |
title_short |
A RNA polymerase with transcriptional activity at 0°C from the Antarctic bacterium Pseudomonas syringae |
title_full |
A RNA polymerase with transcriptional activity at 0°C from the Antarctic bacterium Pseudomonas syringae |
title_fullStr |
A RNA polymerase with transcriptional activity at 0°C from the Antarctic bacterium Pseudomonas syringae |
title_full_unstemmed |
A RNA polymerase with transcriptional activity at 0°C from the Antarctic bacterium Pseudomonas syringae |
title_sort |
rna polymerase with transcriptional activity at 0°c from the antarctic bacterium pseudomonas syringae |
publisher |
Elsevier Science |
publishDate |
1999 |
url |
http://repository.ias.ac.in/64319/ http://www.sciencedirect.com/science/article/pii/S0014579399006602 |
geographic |
Antarctic The Antarctic |
geographic_facet |
Antarctic The Antarctic |
genre |
Antarc* Antarctic |
genre_facet |
Antarc* Antarctic |
op_relation |
Uma, S. Jadhav, R. S. Seshu Kumar, G. Shivaji, S. Ray, M. K. (1999) A RNA polymerase with transcriptional activity at 0°C from the Antarctic bacterium Pseudomonas syringae FEBS Letters, 453 (3). pp. 313-317. ISSN 0014-5793 |
_version_ |
1766238695951695872 |