Ontology highlight
ABSTRACT:
PROVIDER: PRJNA539986 | ENA |
REPOSITORIES: ENA
Similar Datasets
Project description:ApiAP2 are a family of conserved transcription factors (TF) that play an important role in regulating gene expression in apicomplexan parasites. ApiAP2 proteins that may control the cell cycle dependent expression program are to be discovered. To better understand how these cell-cycle dependent gene expression profiles are established, we identified ApiAP2 proteins showing a cell cycle dependent expression. Using the Auxin-degradation system, we produced several inducible knock-down (iKD) mutant for these ApiAP2 proteins. Among them, a cell-cycle regulated ApiAP2 is expressed during the late S-phase of the tachyzoite cell-cycle. The iKD mutant parasites for this gene are unable to proliferate. In presence of Auxin, the mutant parasites do not produce daughter cells and are arrested in the early phase of budding. This indicates that this TF may specifically regulate the early steps of the daughter cell formation. Using RNA-Seq, we demonstrate that the level of expression of number of transcripts is affected by the knock-down of this potential TF.
2020-10-29 | GSE150405 | GEO
Project description:Origins of genetic exchange in Leishmania parasites
| PRJNA788482 | ENA
Project description:Apicomplexan parasites are ubiquitous pathogens of humans. Toxoplasma gondii, a model apicomplexan, possesses a divergent ortholog of mammalian PDK1. This ortholog, TgSPARK, is essential for the ability of parasites to invade and exit their host. Here, we conduct a quantitative mass spectrometry experiment to measure changes to the parasite phosphoproteome following 0, 3, 8, and 24 hours of conditional SPARK depletion.
2024-07-12 | PXD040602 | Pride
Project description:Toxoplasma gondii is an apicomplexan parasite infecting human and animals, causing huge health concerns and economic losses. Calcium ion, a critical second messenger in cells, can regulate related vital activities, particularly in parasite invasion and escape processes. Calmodulin (CaM) is a short, highly conserved Ca2+ binding protein found in all eukaryotic cells, including apicomplexan parasites. After binding to Ca2+, CaM can be activated to interact with a variety of proteins (such as enzymes). Since direct destruction of CaM is impossible, few studies have been conducted on the function of CaM in T. gondii. We generated the CaM indirect knockout strain (iCaM) using a tetracycline-off system with CaM promoter sequence in T. gondii TATI strain, and compared the transcriptomes of tachyzoites with and without Calmodulin.
2022-04-14 | GSE198001 | GEO
Project description:Apicomplexan parasites are ubiquitous pathogens of humans. Toxoplasma gondii, a model apicomplexan, possesses a divergent ortholog of mammalian PDK1. This ortholog, TgSPARK, is essential for the ability of parasites to invade and exit their host. We discovered an interactor of SPARK, an elogin-like protein that we termed SPARKEL. Here, we conduct a quantitative mass spectrometry experiment to measure changes to the parasite proteome following 0, 3, 8, and 24 hours of conditional SPARKEL depletion.
2024-07-12 | PXD040635 | Pride
Project description:In this study we have investigated PfAP2-HC (PF3D7_1456000), a protein that was identified by co-immunoprecipitation with PfHP1 coupled with liquid chromatography-tandem mass spectrometry. PfAP2-HC belongs to the ApiAP2 family, the main transcription factor family in Apicomplexan parasites. We have confirmed that AP2-HC colocalises with HP1 with the use of immunofluorescence assays and chromatin immunoprecipitation-sequencing. We show that PfAP2-HC is not required for heterochromatin maintenance and inheritance with the use of PfAP2-HC Kock out and knockdown. We show with transcriptome-wide microarray time course analysis that PfAP2-HC does not act as a transcription factor in blood stage parasites. We demonstrate that the AP2 domain is dispensable for heterochromatin targeting by introducing a premature stop codon before the AP2 domain. We show that PfAP2-HC binding to heterochromatin dependents on PfHP1. and PfAP2-HC is likely not involved in de novo heterochromatin formation
2020-11-04 | GSE154840 | GEO