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Differential expression analysis of T. thermophilus HB8 wild-type strain in response to copper.

ABSTRACT: We observed the expression profile of the total mRNA in Thermus thermophilus HB8 wild-type strain at 0 and 30 min after the addition of CuSO4. Three wild-type strain of T. thermophilus HB8 were pre-cultured at 70 degC for 16 hours in 3 mL of TT medium containing 0.8% polypeptone, 0.4% yeast extract, 0.2% NaCl, 0.4 mM CaCl2, and 0.4 mM MgCl2, which was adjusted to pH 7.2 with NaOH. The cells (1 mL) were inoculated into 250 mL of the synthetic medium and then cultivated at 70°C for 8 hours (A600 value being ~0.44). Then the 1.25 mM of CuSO4 was added into the medium, and continued cultivation. Cells were collected at 0 and 30 min time point after the addition of copper ion, and then crude RNA was extracted. The expression of each mRNA at each time point was analyzed on a GeneChip as described under Sample Description Sheet of each sample.

ORGANISM(S): Thermus thermophilus HB8

SUBMITTER: Akeo Shinkai

PROVIDER: E-GEOD-19508 | biostudies-arrayexpress |

REPOSITORIES: biostudies-arrayexpress

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Structural and functional characterization of the transcriptional repressor CsoR from Thermus thermophilus HB8.

Sakamoto Keiko K Agari Yoshihiro Y Agari Kazuko K Kuramitsu Seiki S Shinkai Akeo A

Microbiology (Reading, England) 20100415 Pt 7

The TTHA1719 gene from Thermus thermophilus HB8 encodes an orthologue of the copper-sensing transcriptional repressor CsoR. X-ray crystal structure analysis of T. thermophilus CsoR indicated that it forms a homotetramer. The structures of the CsoR monomer and dimer are similar to those of Mycobacterium tuberculosis CsoR. In the absence of copper ions, T. thermophilus CsoR bound to the promoter region of the copper-sensitive operon copZ-csoR-copA, which encodes the copper chaperone CopZ, CsoR and ...[more]

PMID: 20395270

Publication: 1/2

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SuperSeries for the analysis of transcriptional regulation by Thermus themophilus CsoR (TTHA1719)

Project description:We observed the copper response of Thermus thermophilus HB8 wild-type and csoR deficient strain at 0 and 30 min after the addition of 1.25 mM CuSO4, and zinc response of T. thermophilus HB8 wild-type strain at 0 and 30 min after the addition of 1.0 mM ZnSO4. Three wild-type and three csoR deficient strain of T. thermophilus HB8 were pre-cultured at 70 degC for 16 hours in 3 mL of TT medium containing 0.8% polypeptone, 0.4% yeast extract, 0.2% NaCl, 0.4 mM CaCl2, and 0.4 mM MgCl2, which was adjusted to pH 7.2 with NaOH. The cells (1 mL) were inoculated into 250 mL of the synthetic medium and then cultivated at 70M-BM-0C for 8 hours. Then the 1.25 mM of CuSO4 or 1.0 mM ZnSO4 was added into the medium cultivating wild type, and 1.25 mm CuSO4 was added into the medium cultivating csoR deficient strain, and continued cultivation. Cells were collected at 0 and 30 min time point after the addition of copper or zinc ion, and then crude RNA was extracted. The expression of each mRNA at each time point was analyzed on a GeneChip as described under Sample Description Sheet of each sample.

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