Edited Invalid date
14.3 Regulation of Transcription in Eukaryotes I: Roles of
The bacterium doesn't waste energy.
The lac repressor binding to the operator in the gene will be recognized and transcribed.
The presence of a small effector molecule is what causes DNA methylation to affect transcription.
Tryptophan is an effector molecule that suppresses transcription.
The first thing we need to understand is how genes are regulated in the eukaryotes.
The start site is where the genes are being regulated.
The beginning of transcription is in the DNA.
The 5'-TATAAA-3' sequence in the TATA box is 25 bp upstream from the tics seen inbacteria.
The start site for the genes is the activator and repressor proteins.
The start of regulating genes is determined by the TATA box.
If it's missing from the core promoter, it's time to start transcription.
Many genes may start at different locations.
Small effector molecule regulate the core.
Some impor promoter acting alone results in a low level of transcription.
The complexity of transcriptional is not found in their bacterial counterparts.
Animals and plants are multicellular and have different cell types.
Structural genes can differentiate into a variety of cells.
Changes in gene expression are required for animals and plants to progress.
Researchers have found that most eukaryotic genes are regulated by many factors.
The core promoter has a box.
The box sequence is 5'-TATAAA-3'.
The ability of genes to have a TATA box is stimulated by one or more activators.
The A is highlighted to start transcription.
The first 2 are marked by this A.
One or more repressors can affect the ability of adenine in the transcript.
Two pyrimidines and a cytosine flank the A of the transcriptional start site.
Py stands for a pyrimidine.
The binding of small effector found upstream from the core promoter is one of the ways that the function of activators and repressors may be altered.
There are regulatory elements that regulate genes.
The rate of transcription is improved.
Most eukaryotic genes have low levels of transcription when enhancers are not func start site tioning.
The rate of transcription is decreased when these sequence function.
The region complex is a common location for regulatory elements.
Different genes have different locations for regulatory elements.
Regulatory elements can be far away from the promoter yet exert the rate of transcription of genes.
The first regulatory elements were GTFs.
An activator can improve the ability of a GTF called transcription factor II D to initiate transcription.
Three forms of desig enhancer are discussed in Chapter 12.
The genes are scythed by the RNA polymerase II.
Researchers have identified three types of pro teins that play a role in the initiation of transcription at the core promoter of genes.
The core promoter has a box called the TATA that holds the genes of the RNA polymerase II and GTFs.
The TATA box is bound to these proteins by a series of interactions.
The DNA is bound to the RNA polymerase II.
The mediator is a component of transcription.
The function of mediation is to control the rate at which poly merase begins to work.
Review flashcards and saved quizzes
Getting your flashcards
Privacy & Terms