What does the GATC methylation site do?
What does the GATC methylation site do?
Homework Answers
In E. coli downstream GATC sequences are methylated, promoting transcription. For example, pyelonephritis-associated pili (PAP) phase variation in uropathogenic E. coli is controlled by Dam through the methylation of the two GATC sites proximal and distal to the PAP promoter.
Methylation of GATC sites in the dnaAp2 promoter, two of which are in the -35 and -10 sequences, has been predicted to play an important role in regulating dnaA gene expression during the cell cycle because the promoter is sequestered from methylation immediately following replication.
What would be the expected outcome of a mutation in E.coli that prevented methylation of adenine...
What would be the expected outcome of a mutation in E.coli that prevented methylation of adenine in the sequence 5'-GATC-3'? A) loss of epigenetic markers B) Randomization of mismatch repair C) increased mutation rate D) B and C E) All of these
QUESTION 5 In what way does DNA methylation typically regulate transcription? A. Represses transcription. B. Activates...
QUESTION 5 In what way does DNA methylation typically regulate transcription? A. Represses transcription. B. Activates transcription. O C. It doesn't regulate transcription at all. D. Both A and B.
Normally the FMR1 locus does not have DNA methylation in the gene or promoter region. However,...
Normally the FMR1 locus does not have DNA methylation in the gene or promoter region. However, copies of the FMR1 gene with mutation length CGG repeats are modified; they have DNA methylation extending into the promoter region. This leads to ____________ expression of that copy of the FMR1 gene. no change in decreased increased
What is DNA methylation? Describe how this mechanism regulates the expression of genes. What can happen...
What is DNA methylation? Describe how this mechanism regulates the expression of genes. What can happen when the DNA is hyper-methylated? Pick and describe a disease that results from DNA hyper-methylation.
What is phishing, and how does it work? Spotting a fake site is not as easy...
What is phishing, and how does it work? Spotting a fake site is not as easy as you might think. How about viruses, spyware, and adware? Besides keeping your antivirus software up to date, what are some other steps you can take to either prevent virus infection or minimize the effects if you do get infected?
Which does not affect gene expression at the post-transcriptional level? Choose one: O A. DNA methylation...
Which does not affect gene expression at the post-transcriptional level? Choose one: O A. DNA methylation O B. small interfering RNAs O C. microRNAs O D. nucleotide sequences in the untranslated regions of an mRNA
Transcriptional Regulation Gene activation/deactivation 1. what is histone acetylation? How does it affect gene expression? What...
Transcriptional Regulation Gene activation/deactivation 1. what is histone acetylation? How does it affect gene expression? What else can happen to nucleosomes that affects gene expression? Do all the nucleosomes fall off the chromosome at once? 2. what is DNA methylation? How does it affect gene expression? Be able to discuss the examples of DNA methylation covered in class (X inactivation, imprinting). 3. Epigenetics. What is this, and how does it affect gene expression?
In what way is H3K27me3-dependent imprinting different from DNA methylation and what are the implications of...
In what way is H3K27me3-dependent imprinting different from DNA methylation and what are the implications of this difference?
What are the roles of DNA methylation and epigenetic reprogramming of paternal/ maternal and embryonic genomes...
What are the roles of DNA methylation and epigenetic reprogramming of paternal/ maternal and embryonic genomes ?
How does isoleucine 16 stabalize chymotrypsin active site? what would raising the pH well past 8...
How does isoleucine 16 stabalize chymotrypsin active site? what would raising the pH well past 8 do?
QUESTION 5 In what way does DNA methylation typically regulate transcription? A. Represses transcription. B. Activates transcription. O C. It doesn't regulate transcription at all. D. Both A and B.
Which does not affect gene expression at the post-transcriptional level? Choose one: O A. DNA methylation O B. small interfering RNAs O C. microRNAs O D. nucleotide sequences in the untranslated regions of an mRNA
Most questions answered within 3 hours.
-
Where is the error in this code sequence?
String s1 = "Hello";
String s2 = "ello";...
asked 10 months ago -
Financial data for Joel de Paris, Inc., for last year
follow:
Joel de Paris, Inc.
Balance...
asked 10 months ago -
Consider this reaction:
Al2(SO4)3 (aq)+ BaCl3
(aq) Al2Cl6 (aq)- +
3BaSO4(s) . What is the...
asked 10 months ago -
Suppose that Savneet is considering increasing her
recent random sample from 20 car rentals to 40...
asked 10 months ago -
Trucks arrive at an unloading terminal at an average rate of 120
per hour.
Trucks arrive...
asked 10 months ago -
Why are methanol and ethanol completely soluble in water while
octanol is not very little soluble....
asked 10 months ago -
A facilities manager at a university reads in a research report
that the mean amount of...
asked 10 months ago -
When the CuSO4 is rehydrated by adding water to the anhydrous
compound, is this an endothermic...
asked 10 months ago -
A ray of sunlight is passing from diamond into crown glass; the
angle of incidence is...
asked 10 months ago -
A block of mass 0.249 kg is placed on top of a light, vertical
spring of...
asked 10 months ago -
how do the kidneys compensate in the presences of acidosis
a) trigger hyperventilate
b) reserve acid...
asked 10 months ago -
Question 501 pts
The rental rate of capital to the firm increases. Which of the
following...
asked 10 months ago