1Regulationandcontrolofgeneexpression)23(geneexpression)4(temporalspecificity)5(spatialspecificity)(cellortissuespecificity)6(constitutivegeneexpression)基因较少受环境因素影响,而是在个体各个生长阶段的大多数或几乎全部组织中持续表达,或变化很小。如管家基因。7(inductionexpression)(repressionexpression)8(coordinance...
Chapter 16 Control of Gene Expression Chapter16 ControlofGeneExpression Topicstodiscuss •DNAbindingproteins •Prokaryoticgeneregulation –Lacoperon–Trpoperon Today’slecture •Eukaryoticgeneregulation 6groupsofDNA-bindingregulatoryproteinshavebeenidentified ProkaryoticGeneRegulation Nutritionalenviromentandabug’s...
MicroRNAs (miRNAs) control gene expression in animals and plants. Like another class of small RNAs, siRNAs, they affect gene expression posttranscriptionally. While siRNAs in addition act in transcriptional gene silencing, a role of miRNAs in transcriptional regulation has been less clear. We show ...
Control of gene expression in bacteria.plus O
During the past decade, chemically regulated gene expression systems1,2 have been widely used for the temporal control of gene expression. However, as these small molecular inducers diffuse freely and are hard to remove, it is not possible to precisely switch on and off gene expression at an ...
enhancersequences,andtranscriptionfactorsisimportantformakingbiotechproducts!LearningCheck 1.Whatisthemarkofgeneexpression?2.Whatcuesmayturngenesonoroff?3.Definepromoterandname2regionsofeukaryoticpromoters.4.Definetranscriptionfactor.5.Defineenhancer.6.Defineactivator.7.Definerepressor.
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of genes involved in the antiviral, antiproliferative and immuno-modulatory activities of type-I IFNs. In addition to RPE1 cells, the profile of gene expression was also investigated in WISH cells, a cell line that is classically used in IFN studies, and allows to extend our findings to ...
, 2009). At the cellular level, high E2 conditions and noxious stimulation share the common feature of increasing enkephalin gene expression in dorsal horn (Holtzman et al., 1997; Amandusson et al., 1999). This may have significant consequences for E2 and pain processing since a localized ...
Here, we show that a quantitative trait locus GW8 is synonymous with OsSPL16, which encodes a protein that is a positive regulator of cell proliferation. Higher expression of this gene promotes cell division and grain filling, with positive consequences for grain width and yield in rice. ...