نتایج جستجو برای: halomonas sp strain nd9
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A catalase gene, ohktA, from an alkali- and halo-tolerant bacterium, Halomonas sp. SK1, on the pKK223-3, was expressed in the catalase-lacking Escherichia coli strain UM2. Highly purified catalase showing a single band on SDS-PAGE was obtained by two liquid chromatography steps on DEAE-Toyopear1 and Chelating-Sepharose Fast Flow. The enzyme, oHktA, shows high catalase activity with a pH optimum...
Chromohalobacter salexigens is one of nine currently known species of the genus Chromohalobacter in the family Halomonadaceae. It is the most halotolerant of the so-called 'moderately halophilic bacteria' currently known and, due to its strong euryhaline phenotype, it is an established model organism for prokaryotic osmoadaptation. C. salexigens strain 1H11(T) and Halomonas elongata are the fir...
A strain of Halomonas bacteria, GFAJ-1, has been claimed to be able to use arsenate as a nutrient when phosphate is limiting and to specifically incorporate arsenic into its DNA in place of phosphorus. However, we have found that arsenate does not contribute to growth of GFAJ-1 when phosphate is limiting and that DNA purified from cells grown with limiting phosphate and abundant arsenate does n...
The recent claim by Wolfe-Simon et al. that the Halomonas bacterial strain GFAJ-1 when grown in arsenate-containing medium with limiting phosphate is able to substitute phosphate with arsenate in biomolecules including nucleic acids and in particular DNA(1) arose much skepticism, primarily due to the very limited chemical stability of arsenate esters (see ref. 2 and references therein). A major...
Clostridium sp. strain TO-931 can rapidly convert the primary bile acid cholic acid to a potentially toxic compound, deoxycholic acid. Mixed oligonucleotide probes were used to isolate a gene fragment encoding a putative bile acid transporter from Clostridium sp. strain TO-931. This DNA fragment had 60% nucleotide sequence identity to a known bile acid transporter gene from Eubacterium sp. stra...
We report the main characteristics of 'Actinomyces provencensis' strain SN12T sp. nov., 'Corynebacterium bouchesdurhonense' strain SN14T sp. nov., 'Corynebacterium provencense' strain SN15T sp. nov. and 'Xanthomonas massiliensis' strain SN8T sp. nov., which were all isolated from stool samples from obese French patients.
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