Histidine utilisation operon (hut) is upregulated at low temperature in the antarctic psychrotrophic bacterium Pseudomonas syringae
The antarctic psychrotrophic bacterium Pseudomonas syringae was mutagenised using a transposon Tn5-OT182 which facilitates identification of promoter fusions expressing the reporter gene (lacZ) for β-galactosidase. Most mutants expressed β-galactosidase both at optimal growth temperature (20-22°C) a...
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John Wiley and Sons
1998
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ftindianacasci:oai:repository.ias.ac.in:64317 2023-05-15T13:46:14+02:00 Histidine utilisation operon (hut) is upregulated at low temperature in the antarctic psychrotrophic bacterium Pseudomonas syringae Kannan, K. Janiyani, Kamala L. Shivaji, S. Ray, M. K. 1998-04-01 http://repository.ias.ac.in/64317/ http://www.sciencedirect.com/science/article/pii/S0378109798000433 unknown John Wiley and Sons Kannan, K. Janiyani, Kamala L. Shivaji, S. Ray, M. K. (1998) Histidine utilisation operon (hut) is upregulated at low temperature in the antarctic psychrotrophic bacterium Pseudomonas syringae FEMS Microbiology Letters, 161 (1). pp. 7-14. ISSN 0378-1097 QL Zoology Article PeerReviewed 1998 ftindianacasci 2013-01-20T12:25:37Z The antarctic psychrotrophic bacterium Pseudomonas syringae was mutagenised using a transposon Tn5-OT182 which facilitates identification of promoter fusions expressing the reporter gene (lacZ) for β-galactosidase. Most mutants expressed β-galactosidase both at optimal growth temperature (20-22°C) and at low temperature (4°C). But a small percentage of the mutants (~5%) were unique in that they expressed β-galactosidase activity predominantly at low temperature. One such mutant was found to have an insertion in the gene for urocanase (hutU) of the histidine utilisation (hut) operon. Direct assay of urocanase and histidase activity in wild-type cells of various antarctic psychrotrophic strains including P. syringae, P. fluorescens and P. putida also suggested that the hut operon is expressed at an elevated level at low temperature. Article in Journal/Newspaper Antarc* Antarctic Indian Academy of Sciences: Publication of Fellows Antarctic The Antarctic |
institution |
Open Polar |
collection |
Indian Academy of Sciences: Publication of Fellows |
op_collection_id |
ftindianacasci |
language |
unknown |
topic |
QL Zoology |
spellingShingle |
QL Zoology Kannan, K. Janiyani, Kamala L. Shivaji, S. Ray, M. K. Histidine utilisation operon (hut) is upregulated at low temperature in the antarctic psychrotrophic bacterium Pseudomonas syringae |
topic_facet |
QL Zoology |
description |
The antarctic psychrotrophic bacterium Pseudomonas syringae was mutagenised using a transposon Tn5-OT182 which facilitates identification of promoter fusions expressing the reporter gene (lacZ) for β-galactosidase. Most mutants expressed β-galactosidase both at optimal growth temperature (20-22°C) and at low temperature (4°C). But a small percentage of the mutants (~5%) were unique in that they expressed β-galactosidase activity predominantly at low temperature. One such mutant was found to have an insertion in the gene for urocanase (hutU) of the histidine utilisation (hut) operon. Direct assay of urocanase and histidase activity in wild-type cells of various antarctic psychrotrophic strains including P. syringae, P. fluorescens and P. putida also suggested that the hut operon is expressed at an elevated level at low temperature. |
format |
Article in Journal/Newspaper |
author |
Kannan, K. Janiyani, Kamala L. Shivaji, S. Ray, M. K. |
author_facet |
Kannan, K. Janiyani, Kamala L. Shivaji, S. Ray, M. K. |
author_sort |
Kannan, K. |
title |
Histidine utilisation operon (hut) is upregulated at low temperature in the antarctic psychrotrophic bacterium Pseudomonas syringae |
title_short |
Histidine utilisation operon (hut) is upregulated at low temperature in the antarctic psychrotrophic bacterium Pseudomonas syringae |
title_full |
Histidine utilisation operon (hut) is upregulated at low temperature in the antarctic psychrotrophic bacterium Pseudomonas syringae |
title_fullStr |
Histidine utilisation operon (hut) is upregulated at low temperature in the antarctic psychrotrophic bacterium Pseudomonas syringae |
title_full_unstemmed |
Histidine utilisation operon (hut) is upregulated at low temperature in the antarctic psychrotrophic bacterium Pseudomonas syringae |
title_sort |
histidine utilisation operon (hut) is upregulated at low temperature in the antarctic psychrotrophic bacterium pseudomonas syringae |
publisher |
John Wiley and Sons |
publishDate |
1998 |
url |
http://repository.ias.ac.in/64317/ http://www.sciencedirect.com/science/article/pii/S0378109798000433 |
geographic |
Antarctic The Antarctic |
geographic_facet |
Antarctic The Antarctic |
genre |
Antarc* Antarctic |
genre_facet |
Antarc* Antarctic |
op_relation |
Kannan, K. Janiyani, Kamala L. Shivaji, S. Ray, M. K. (1998) Histidine utilisation operon (hut) is upregulated at low temperature in the antarctic psychrotrophic bacterium Pseudomonas syringae FEMS Microbiology Letters, 161 (1). pp. 7-14. ISSN 0378-1097 |
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1766238693880758272 |