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Nucleosome positioning along the DNA can influence where transcriptional regulatory proteins are able to bind DNA.
If a nucleosome is bound to an enhancer sequence, it may outcompete a regulatory protein from binding the same sequence.
Conversely, if an enhancer sequence is in the linker DNA where the nucleosome is absent, the regulatory protein does not have to compete with the nucleosome.
The position of the nucleosome can alter the accessibility of a
sequence of DNA to DNA binding proteins.
Suppose that this region of DNA contained several enhancer sequences that bind highly conserved regulatory proteins to stimulate transcription of a gene in this region, and that binding is more efficient when the enhancer sequence isnot associated with a nucleosome. Use this information to complete these sentences.
Fill in the blanks with the appropriate words. Words may be used more than once.
a. Fall within linker DNA
c. be bound by nucleosomes
Since sea urchins have longer linker DNA segments than Drosophila melanogaster, when this region of DNA is moved to the sea urchin it is likely that these enhancer sequences will_______________.
With___________enhancer sequences available in sea urchins to bind regulatory proteins that stimulate transcription, the same region of DNA will likely generate__________RNA transcripts.
Nucleosome positioning along the DNA can influence where transcriptional regulatory proteins are able to bind DNA....
What are transcription factors? regulatory DNA sequences that bind to the promoter region of a gene regulatory DNA sequences that bind to a protein regulatory motifs that bind to the promoter region of a gene regulatory proteins that bind to specific DNA sequences
Question 1 Match the term with the best definition or description; most topics relate to the regulation of gene expression. General type of protein which will increase transcription rates when it attaches to a site A. Factor connected to a particular gene - B. Co-repressor C. Enhancer D. Promoter E. Structural F. Intron G. Activator H. Operator I. Basal transcription J. Glucocorticoid receptor K. Sigma factor L. Mediator M. Inducer N. TATA box O. Repressor The rates of mRNA produced...
The observation that in any DNA sample, A T and G C A. DNase sequencing An analytical method that determines which segments of DNA are bound by a particular B. Chargaff's rule protein factor, such as a transcription factor C. ChIP sequencing D. Euchromatin E. Histone acetylation F. major groove - # Areas associated with a eukaryotic gene that are where most DNA methylation occurs. # An analytical technique that involves a small slide or chip with many segments of...
can someone explain how to answer this with reasons why 30-45 mins after estrogen addition: Acchyiase (HAT, odde auhye 60-90 mins after estrogen addition: Reauitment ef Poy to open 7. T identify the Gene X DNA element responsible for regulation by a Growth Fagor, you perform a linker scanning experiment in which you mutate 10 bp Tegions centered around positions -205 to-5 in the Gene X promoter/promoter- proximal region (wt wild-type promoter). The promoter variants were tested for their ability...
Hagrid has purified a protein from unicom sweat and called UNI-1. He has then doned the Unit gone and inserted in rat zygotes (by microinjection) a recombinant construct containing the Uni-1 coding sequence its entire 5 UTR region, covering both the minimal promoter and a series of cutative regulatory als elements. The mutantrats develop glorious, luminous hair. Hagrid has also discovered that the UNI-1 protein binds very tightly to DNA and hypothesizes it is a transcription factor that regulates proliferation...