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Chromohalobacter salexigens strain:voya40th042

ABSTRACT: Genome sequencing and assembly of potential humic acid transforming bacteria

PROVIDER: PRJNA761917 | ENA |

REPOSITORIES: ENA

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Complete genome sequence of the halophilic and highly halotolerant Chromohalobacter salexigens type strain (1H11(T)).

Project description: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 first and the second members of the family Halomonadaceae with a completely sequenced genome. The 3,696,649 bp long chromosome with a total of 3,319 protein-coding and 93 RNA genes was sequenced as part of the DOE Joint Genome Institute Program DOEM 2004.

| S-EPMC3368415 | biostudies-literature

Chromohalobacter salexigens strain:ANJ 207

Project description:Chromohalobacter salexigens strain:ANJ 207 Genome sequencing and assembly

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Chromohalobacter salexigens

Project description:A moderate halophile which can grow on a variety of salts

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Trends in the codon usage patterns of Chromohalobacter salexigens genes.

Project description:Chromohalobacter salexigens, a Gammaproteobacterium belonging to the family Halomonadaceae, shows a broad salinity range for growth. In order to reveal the factors influencing architecture of protein coding genes in C. salexigens, pattern of synonymous codon usage bias has been investigated. Overall codon usage analysis of the microorganism revealed that C and G ending codons are predominantly used in all the genes which are indicative of mutational bias. Multivariate statistical analysis showed that the genes are separated along the first major explanatory axis according to their expression levels and their genomic GC content at the synonymous third positions of the codons. Both NC plot and correspondence analysis on Relative Synonymous Codon Usage (RSCU) indicates that the variation in codon usage among the genes may be due to mutational bias at the DNA level and natural selection acting at the level of mRNA translation. Gene length and the hydrophobicity of the encoded protein also influence the codon usage variation of genes to some extent. A comparison of the relative synonymous codon usage between 10% each of highly and lowly expressed genes determines 23 optimal codons, which are statistically over represented in the former group of genes and may provide useful information for salt-stressed gene prediction and gene-transformation. Furthermore, genes for regulatory functions; mobile and extrachromosomal element functions; and cell envelope are observed to be highly expressed. The study could provide insight into the gene expression response of halophilic bacteria and facilitate establishment of effective strategies to develop salt-tolerant crops of agronomic value.

| S-EPMC3523223 | biostudies-literature

Temperature- and salinity-decoupled overproduction of hydroxyectoine by Chromohalobacter salexigens.

Project description:Hydroxyectoine overproduction by the natural producer Chromohalobacter salexigens is presented in this study. Genetically engineered strains were constructed that at low salinity coexpressed, in a vector derived from a native plasmid, the ectoine (ectABC) and hydroxyectoine (ectD) genes under the control of the ectA promoter, in a temperature-independent manner. Hydroxyectoine production was further improved by increasing the copies of ectD and using a C. salexigens genetic background unable to synthesize ectoines.

| S-EPMC3568561 | biostudies-literature

Chromohalobacter salexigens strain:40a_TX

Project description:Chromohalobacter salexigens 40a_TX genome sequencing

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Chromohalobacter salexigens strain:P4D

Project description:Chromohalobacter salexigens strain:P4D Genome sequencing

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Chromohalobacter salexigens strain:MP25462 | isolate:Environmental

Project description:Chromohalobacter salexigens strain:MP25462 | isolate:Environmental Genome sequencing and assembly

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Chromohalobacter salexigens strain:ANJ207

Project description:Chromohalobacter salexigens ANJ207 transcriptome analysis at different salinity.

| PRJNA597116 | ENA

Genome-scale reconstruction of metabolic network for a halophilic extremophile, Chromohalobacter salexigens DSM 3043.

Project description:BackgroundChromohalobacter salexigens (formerly Halomonas elongata DSM 3043) is a halophilic extremophile with a very broad salinity range and is used as a model organism to elucidate prokaryotic osmoadaptation due to its strong euryhaline phenotype.ResultsC. salexigens DSM 3043's metabolism was reconstructed based on genomic, biochemical and physiological information via a non-automated but iterative process. This manually-curated reconstruction accounts for 584 genes, 1386 reactions, and 1411 metabolites. By using flux balance analysis, the model was extensively validated against literature data on the C. salexigens phenotypic features, the transport and use of different substrates for growth as well as against experimental observations on the uptake and accumulation of industrially important organic osmolytes, ectoine, betaine, and its precursor choline, which play important roles in the adaptive response to osmotic stress.ConclusionsThis work presents the first comprehensive genome-scale metabolic model of a halophilic bacterium. Being a useful guide for identification and filling of knowledge gaps, the reconstructed metabolic network iOA584 will accelerate the research on halophilic bacteria towards application of systems biology approaches and design of metabolic engineering strategies.

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