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https://www.readbyqxmd.com/read/23860323/regulation-of-fibrillin-1-gene-expression-by-sp1
#1
Gao Guo, Christian Rödelsperger, Martin Digweed, Peter N Robinson
Mutations in the fibrillin-1 gene (FBN1) cause Marfan Syndrome (MFS), a hereditary disorder of connective tissue. The transcription of FBN1 has been reported to be driven by a short ultraconserved region (SUPR) in the 5' untranslated exon A of FBN1, but the nature of other factors involved in FBN1 gene regulation has not been clarified. In this study, we characterized the transcription factors involved in FBN1 gene regulation. The results show that Sp1 protein binds to two putative binding sites in the promoter of FBN1...
September 25, 2013: Gene
https://www.readbyqxmd.com/read/22521691/integrative-genomics-identifies-the-corepressor-smrt-as-a-gatekeeper-of-adipogenesis-through-the-transcription-factors-c-ebp%C3%AE-and-kaiso
#2
Sunil K Raghav, Sebastian M Waszak, Irina Krier, Carine Gubelmann, Alina Isakova, Tarjei S Mikkelsen, Bart Deplancke
The molecular role of corepressors is poorly understood. Here, we studied the transcriptional function of the corepressor SMRT during terminal adipogenesis. Genome-wide DNA-binding profiling revealed that this corepressor is predominantly located in active chromatin regions and that most distal SMRT binding events are lost after differentiation induction. Promoter-proximal tethering of SMRT in preadipocytes is primarily mediated by KAISO through the conserved TCTCGCGAGA motif. Further characterization revealed that KAISO, similar to SMRT, accelerates the cell cycle and increases fat accumulation upon knockdown, identifying KAISO as an adipogenic repressor that likely modulates the mitotic clonal expansion phase of this process...
May 11, 2012: Molecular Cell
https://www.readbyqxmd.com/read/20587588/comprehensive-analysis-of-the-palindromic-motif-tctcgcgaga-a-regulatory-element-of-the-hnrnpk-promoter
#3
Michal Mikula, Pawel Gaj, Karolina Dzwonek, Tymon Rubel, Jakub Karczmarski, Agnieszka Paziewska, Artur Dzwonek, Piotr Bragoszewski, Michal Dadlez, Jerzy Ostrowski
Definitive identification of promoters, their cis-regulatory motifs, and their trans-acting proteins requires experimental analysis. To define the HNRNPK promoter and its cognate DNA-protein interactions, we performed a comprehensive study combining experimental approaches, including luciferase reporter gene assays, chromatin immunoprecipitations (ChIP), electrophoretic mobility shift assays (EMSA), and mass spectrometry (MS). We discovered that out of the four potential HNRNPK promoters tested, the one containing the palindromic motif TCTCGCGAGA exhibited the highest activity in a reporter system assay...
August 2010: DNA Research: An International Journal for Rapid Publication of Reports on Genes and Genomes
https://www.readbyqxmd.com/read/17351670/a-common-cis-element-in-promoters-of-protein-synthesis-and-cell-cycle-genes
#4
Lucjan S Wyrwicz, Paweł Gaj, Marcin Hoffmann, Leszek Rychlewski, Jerzy Ostrowski
Gene promoters contain several classes of functional sequence elements (cis elements) recognized by protein agents, e.g. transcription factors and essential components of the transcription machinery. Here we describe a common DNA regulatory element (tandem TCTCGCGAGA motif) of human TATA-less promoters. A combination of bioinformatic and experimental methodology suggests that the element can be critical for expression of genes involved in enhanced protein synthesis and the G1/S transition in the cell cycle...
2007: Acta Biochimica Polonica
https://www.readbyqxmd.com/read/8473323/characterization-of-the-human-adp-ribosylation-factor-3-promoter-transcriptional-regulation-of-a-tata-less-promoter
#5
R S Haun, J Moss, M Vaughan
The 5'-flanking region of the human ADP-ribosylation factor 3 gene contains the features of a housekeeping gene. It lacks a TATA or CAAT box, has several GC boxes within a highly GC-rich region, and utilizes multiple transcription initiation sites. The cis-acting elements involved in regulating expression of the gene were identified by transient transfections of IMR-32 neuroblastoma cells. Reporter plasmids were modified to facilitate construction of defined promoter deletions linked to chloramphenicol acetyltransferase or luciferase using ligation-independent cloning...
April 25, 1993: Journal of Biological Chemistry
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