IlAmpBerb
Ontology highlight
ABSTRACT:
PROVIDER: PRJEB45130 | ENA |
REPOSITORIES: ENA
Similar Datasets
Project description:Amphipyra berbera (Svensson's copper underwing) genome assembly, ilAmpBerb1
| PRJEB45915 | ENA
Project description:Amphipyra berbera (Svensson's copper underwing), genomic and transcriptomic data
| PRJEB45112 | ENA
Project description:Amphipyra berbera (Svensson's copper underwing) genome assembly, ilAmpBerb1, alternate haplotype
| PRJEB45916 | ENA
Project description:In our previous study, by microarray detection, we illuminated the gene expression profiling in copper-exposed embryos. We found that genes of hematopoiesis, hemoglobin genes exhibited significant increase in copper-exposed embryos. In addition, copper-exposed embryos presented relatively high levels of reactive oxygen species (ROS), while the oxygen binding and oxygen transporter activities were also up-regulated in the embryos. Moreover, the scavengers NAC, GSH, and DMTU not only inhibited in vivo ROS levels induced by copper, but also significantly rescued expression of hemoglobin genes back to almost normal levels, and also helped with copper excretion from the copper-exposed embryos. Our data first demonstrated that ROS mediated copper induced increased expression of hemoglobin genes in vertebrates, and copper excretion was blocked by its induced ROS.
2015-12-21 | GSE76107 | GEO
Project description:Copper is essential for both innate and adaptive immune function and copper resistance has emerged as an important determinant of virulence of microbial pathogens. In the human pathogen Streptococcus pneumoniae (Spn), cytoplasmic copper resistance is mediated by an operon encoding the copper-responsive repressor CopY, CupA, of unknown function, and CopA, a copper effluxing P1B-type ATPase. We show that CupA is a novel cell membrane-anchored Cu(I) chaperone for CopA, and that a Cu(I)-binding competent, membrane-localized CupA, like CopA, is obligatory for copper resistance.
2013-05-24 | GSE39176 | GEO
Project description:Copper-limiting growth conditions were thought to cause an induction of genes possibly involved in copper uptake and sorting. This rationale in mind, we performed microarray analyses on B. japonicum cells grown in three variations of the BVM minimal medium. Variant 1 contained 2 μM CuSO4 (copper excess). Variant 2 was prepared in HCl-treated glassware without any copper added (copper starvation). The residual copper concentration in this copper-starvation medium was analyzed by GF-AAS and determined to be 5 nM. Variant 3 (extreme copper limitation) was prepared like variant 2 but with the addition of 10 μM BCS and 1 mM ascorbic acid where BCS chelates Cu(I) selectively, and ascorbic acid reduces any Cu(II) to Cu(I). Changes in the transcription profiles were recorded by the pairwise comparison of cells grown in variant 2 vs. 1, and variant 3 vs. 2. Only a small set of genes were differentially up- or down-regulated when copper-starved cells were compared with cells grown in copper excess. Most notably, five genes located adjacent to each other on the B. japonicum genome displayed an increased expression: bll4882 to bll4878. The five genes were named pcuA, pcuB, pcuC, pcuD, and pcuE (mnemonic of proteins for Cu trafficking). The genes with decreased expression are either of unknown function or – not surprisingly – play a role in copper resistance. Extreme copper limitation (variant 3 vs. 2) did not further enhance the expression of the five pcu genes. Instead, another cluster of adjacent genes was strongly up-regulated: bll0889 to bll0883, which code for unidentified transport functions. Incidentally, the list also includes the copper chaperone ScoI. Taken together, copper-limiting growth conditions have led to the de-repression of genes potentially involved in copper acquisition.
2012-10-01 | GSE40437 | GEO