Ontology highlight
ABSTRACT:
PROVIDER: PRJNA910799 | ENA |
REPOSITORIES: ENA
Dataset's files
| Action | DRS | |||
|---|---|---|---|---|
| SRR22671477.fastq.gz | Fastqsanger.gz |
Items per page: 5 1 - 1 of 1 |
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Project description:Hyperthermophilic bacteria of the genus Thermotoga are known to utilize a wide range of simple and complex polysaccharides. T. maritima's transcriptional response to a variety of mono- and poly-saccharides was previously studied to assign functions to genes involved in carbohydrate uptake and utilization. To compare and contrast closely-related members of the Thermotoga genus, a four-species microarray was developed by expanding a whole genome T. maritima array to include unique genes from three other species (T. neapolitana, T. petrophila, and T. sp. RQ2). This multi-species array was used to investigate the diversity of the genus, specifically the response of each of the four species to a mixture of polysaccharides (galactomannan, glucomannan, xylan, pectin, lichenan, and carboxymethyl cellulose).
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Project description:In this study, we utilized Comparative Genomic Hybridization (CGH), using probes designed from EST sequence, to identify genes located on the X chromosome of four species in the stalk-eyed fly genus Teleopsis. Analysis of log ratio values from the CGH microarrays for over 3400 genes produces a strongly bimodal distribution that clearly differentiates autosomal from X-linked genes for all four species. Genetic mapping of 35 of these genes in T. dalmanni indicates the CGH results correctly identified chromosomal location in all cases. Syntenic comparison with Drosophila indicates that 90% of the X-linked genes in Teleopsis are homologous to genes located on chromosome 2L in D. melanogaster, suggesting the formation of a nearly complete neo-X chromosome from Muller element B in the Dipteran lineage leading to Teleopsis. Overall, this study demonstrates CGH is a useful technique for identifying chromosomal sex-linkage and should be applicable to other organisms with EST or partial genomic information.
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Project description:Hyperthermophilic bacteria of the genus Thermotoga are known to utilize a wide range of simple and complex polysaccharides. T. maritima's transcriptional response to a variety of mono- and poly-saccharides was previously studied to assign functions to genes involved in carbohydrate uptake and utilization. To compare and contrast closely-related members of the Thermotoga genus, a four-species microarray was developed by expanding a whole genome T. maritima array to include unique genes from three other species (T. neapolitana, T. petrophila, and T. sp. RQ2). This multi-species array was used to investigate the diversity of the genus, specifically the response of each of the four species to a mixture of polysaccharides (galactomannan, glucomannan, xylan, pectin, lichenan, and carboxymethyl cellulose). RNA derived from glucose-grown cultures (glu) was compared to RNA derived from polysaccharide-grown cultures (poly) using a dye swap setup.
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