Project description:Purpose: To evaluate transcriptome-wide alterations in CD4+ T cells cultured under Th1-polarizing conditions in the absence of the Ikaros zinc finger transcription factor Eos via RNA-seq analysis.
Project description:Zinc finger transcriptional factor CASZ1b suppresses neuroblastoma growth. We have generated a tetracycline inducible CASZ1b expression neuroblastoma cell line (SY5YtetCASZ1b), in which CASZ1b has been transfected into SY5Y cells and its expression could be induced by treating the cells with tetracycline. Using gene expression profiling assay for the cells treated with tetracycline (Tet+) or without tetracycline (Tet-), we identified CASZ1b target genes and downstream transcriptional pathways in neuroblastoma cells.
2016-03-08 | GSE78927 | GEO
Project description:The zinc finger transcription factor BbSmr1 regulates conidial development
Project description:Gene expression profiling of immortalized human mesenchymal stem cells with hTERT/E6/E7 transfected MSCs. hTERT may change gene expression in MSCs. Goal was to determine the gene expressions of immortalized MSCs.
Project description:Kynureninase is a member of a large family of catalytically diverse but structurally homologous pyridoxal 5'-phosphate (PLP) dependent enzymes known as the aspartate aminotransferase superfamily or alpha-family. The Homo sapiens and other eukaryotic constitutive kynureninases preferentially catalyze the hydrolytic cleavage of 3-hydroxy-l-kynurenine to produce 3-hydroxyanthranilate and l-alanine, while l-kynurenine is the substrate of many prokaryotic inducible kynureninases. The human enzyme was cloned with an N-terminal hexahistidine tag, expressed, and purified from a bacterial expression system using Ni metal ion affinity chromatography. Kinetic characterization of the recombinant enzyme reveals classic Michaelis-Menten behavior, with a Km of 28.3 +/- 1.9 microM and a specific activity of 1.75 micromol min-1 mg-1 for 3-hydroxy-dl-kynurenine. Crystals of recombinant kynureninase that diffracted to 2.0 A were obtained, and the atomic structure of the PLP-bound holoenzyme was determined by molecular replacement using the Pseudomonas fluorescens kynureninase structure (PDB entry 1qz9) as the phasing model. A structural superposition with the P. fluorescens kynureninase revealed that these two structures resemble the "open" and "closed" conformations of aspartate aminotransferase. The comparison illustrates the dynamic nature of these proteins' small domains and reveals a role for Arg-434 similar to its role in other AAT alpha-family members. Docking of 3-hydroxy-l-kynurenine into the human kynureninase active site suggests that Asn-333 and His-102 are involved in substrate binding and molecular discrimination between inducible and constitutive kynureninase substrates.
Project description:Comprehensive screens and a universal zinc finger model enable transcription factor reprogramming 2 factor reprogrammingComprehensive screens and a universal zinc finger model enable transcription factor reprogramming
