Cis- and trans-acting elements in cowpea mosaic virus RNA replication. Virology 195, 377-386.van Bokhoven H, Le Gall O, Kasteel D, Verver J, Wellink J, van Kammen AB. 1993. Cis- and trans-acting elements in cowpea mosaic virus RNA replication. Virology 195:377-86...
以乳糖操纵子(lacoperon)为例,说明什么是顺式作用元件(cis-actingelement),什么是反式作用因子(trans-actingfactor)?它们各自如何发挥作用?答:顺式作用元件是指DNA分子上对基因表达有调节活性的某些特定的调控序列,其活性仅影响与其自身处于同一DNA分子上的基因,这种DNA序列多位于基因旁侧或内含子中,不编码蛋白质。真...
相关知识点: 试题来源: 解析 顺式作用元件(cis-actingelement):是指可影响自身基因表达活性的真核DNA序列。根据顺式作用元件在基因中的位置、转录激活作用的性质及发挥作用的方式,可将真核基因的顺式作用元件分为启动子、增强子及沉默子等。反馈 收藏
Finally, a hormone-controlled in vitro transcription system derived from Xenopus liver nuclear extracts was exploited to characterize two additional novel cis -acting elements within the vitellogenin gene B1 promoter. One of them, a negative regulatory element (NRE), is responsible for repression of ...
Our results suggest that a combination of both cis- and trans-acting factors have evolved among the three D. simulans clade species and interact to affect recombination rate.doi:10.1111/j.1420-9101.2012.02578.xM. V. CattaniCorrespondence: Maria Victoria Cattani, Center for Genomics and Systems ...
The flagellar genes of the bacterium Caulobacter crescentus are organized into a regulatory hierarchy that consists of four classes or levels of genes, and expression of these genes is restricted to a discrete interval in the cell cycle that begins just prior to flagellum assembly. This paper summa...
六、以乳糖操纵子(lac operon)为例,说明什么是顺式作用要素(cis-acting element)?什么是反式作用因子(trans-acting factor)?它们各自如何发挥作用?(10分) 答:___ 如上所示:i为反式作用因子,它通过形成阻遏蛋白并结合operator使lac-o不表达,这种阻遏作用可以发生在与i不同的DNA分子上,具有可转移性。p,o为顺...
A human cytomegalovirus early promoter with upstream negative and positive cis-acting elements: IE2 negates the effect of the negative element, and NF-Y bi... We investigated the cis-acting and trans-acting factors that regulate transcription from this UL4 promoter. In transient transfection assays...
We investigated the cis-acting elements and trans-acting proteins responsible for a higher basal rate of transcription of hCG/LH receptor gene in human choriocarcinoma JEG-3 cells compared with normal term pregnancy placenta. Sequential deletion of the 5'-flanking region of the gene revealed that ...
Alternative splicing and RNA editing are the two major pre-messenger RNA (pre-mRNA) processing steps diversifying transcriptome in eukaryotes. Regulation of alternative splicing involves cis-acting elements, such as exonic/intronic splicing enhancers/silencers (ESE/S, ISE/S), and trans-acting factors...