Question

A transcript contains the leader sequence and a polyA tail. Based on what you have learned,...

A transcript contains the leader sequence and a polyA tail. Based on what you have learned, why do these transcripts need to have these two elements?

Science   Biology   
0 0
Add a commentTranscribed image text
Next >

Homework Answers

Answer #1

mRNA transcript consists of 5' cap or leader sequence and 3' end Poly A tail. These two structures are present in mRNA for different purposes. When pre mRNA is being synthesized a 7 methylguanosine cap is added to the 5' end of the RNA sequence. This cap protects the RNA from degradation. 5' cap has function in translation too, in Translation when mRNA goes to ribosome for initiation, ribosomes recognize this cap region to start translation. 3' Poly A tail is synthesized after mRNA elongation. The main function of poly A tail is in the transportation of mRNA from the nucleus to the cytosol. Also it has function in protection of mRNA from degradation.

Please give a thumbs up. Thank-you!!

0 0
Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Log In

Sign Up

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
A transcript contains the leader sequence and a polyA tail. Based on what you have learned,...
A transcript contains the leader sequence and a polyA tail. Based on what you have learned, why do these transcripts need to have these two elements?
You are studying an mRNA whose polyA tail is rapidly shortened by a 3' to 5'...
You are studying an mRNA whose polyA tail is rapidly shortened by a 3' to 5' exonuclease after exposure to something in the air. This means the polyA tail is shortened from its long form length of 200 nucleotides to only 10 nucleotides A. What effect do you think the shortening of the polyA tail will have on the expression of the gene being effected B. Describe two mechanisms by which the shortened polyA tail could have the effect you...
You obtain the sequence of a gene containing 10 exons, 9 introns, and a 3' UTR...
You obtain the sequence of a gene containing 10 exons, 9 introns, and a 3' UTR containing a polyadenylation consensus sequence. The fifth intron also contains a polyadenylation site. To test whether both polyadenylation sites are used, you isolate mRNA and find a longer transcript from muscle tissue and a shorter transcript from all other tissues. Which of the following is the most likely mechanism underlying these alternative transcripts? A. The mRNA in muscle cells is edited to eliminate the...
The His operon though having a different sequence, utilizes a similar mechanism for regulation. Its leader...
The His operon though having a different sequence, utilizes a similar mechanism for regulation. Its leader peptide has the sequence Met-His-Ala-Ile-Phe-His-Ile-His-Gly-Trp-Trp-His-Ser-Thr-Stop. In an experiment you substitute the His leader sequence for the Trp leader peptide (purple region) in the Trp operon. What effect do you think this will have on amino acid attenuation, if any? Provide your rationale.
You have created a strain of E. coli in which the 5’ leader sequence of the...
You have created a strain of E. coli in which the 5’ leader sequence of the trp operon has been mutated to replace all of the tryptophan codons with arginine codons. How will this affect the expression of the trp operon and the arginine operon?
What is Leadership and what qualities do you think a leader should have? Be specific! I...
What is Leadership and what qualities do you think a leader should have? Be specific! I need the answer to be a long paragraph
As a nurse leader, you have to set up a new patient service budget. What sources...
As a nurse leader, you have to set up a new patient service budget. What sources of information do you need to build the budget?
Uses for Time Series Based on what you have learned, think of a use for time...
Uses for Time Series Based on what you have learned, think of a use for time series analysis and share it with the class.
In your opinion and based on what you have learned about the Affordable Care Act, which...
In your opinion and based on what you have learned about the Affordable Care Act, which facet of Donabedian’s model did the Affordable Care Act seek first and foremost to address? What were the expectations for how the other two facets would be impacted?
Based on what we have learned and read thus far, do you think the United States'...
Based on what we have learned and read thus far, do you think the United States' is competitive in the global market? Explain your answer in terms of the US's resources and capabilities, and the informal and formal institutions present in the country.
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT