Question

What would the consequences be for trp regulation if the leader sequence were deleted?

What would the consequences be for trp regulation if the leader sequence were deleted?

Science   Biology   
0 0
Add a commentTranscribed image text
Next >

Homework Answers

Answer #1

Q.What would the consequences be for trp regulation if the leader sequence were deleted?

Answer: When the level of tryptophan in the environment is high, the trp operon is inactive (switched 'off'). Trp operon is active (switched 'on') when there is a condition in the cell to synthesize the tryptophan all by itself (level of tryptophan is low in the environment).

The leader sequence of trp operon are the RNA element which forms secondary structures to signal RNA polymerase to terminate transcribing when trp operon is switched 'on'(when trpytophan is now sufficiently available in the cell). Deletion of such sequence may result in unstable transcription.

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
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 create a mutant in which the trp codons in the leader region of the trp...
You create a mutant in which the trp codons in the leader region of the trp operon are deleted. Will expression of trp operon genes increase or decrease? Why?
What would happen to expression of the trp operon if the 2 trp alleles (UGG) in...
What would happen to expression of the trp operon if the 2 trp alleles (UGG) in the leader sequences were mutated to GGG (Gly) codons in the presence of tryptophan and absene of tryptophan?
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?
Suppose that you used site-specific mutagenesis to modify the trpL sequence such that the two UGG...
Suppose that you used site-specific mutagenesis to modify the trpL sequence such that the two UGG Trp codons at positions 54-56 and 57-59 in the mRNA leader sequence were changed to GGG Gly codons. Will attenuation of the trp operon still be regulated by the presence or absence of tryptophan in the medium in which the E. coli cells are growing? Explain
If the guanine (G) in the DNA sequence 3’ TTACGTTTC is deleted, what are the first...
If the guanine (G) in the DNA sequence 3’ TTACGTTTC is deleted, what are the first 2 amino acids that will be joined at the ribosome? Remember there is a START codon. Use the information on this chart to answer the question. asparagine, alanine methionine, glutamine leucine, glycine leucine, phenylalanine methionine, lysine The mutation in the above question is an example of a ________________ mutation. Group of answer choices frameshift nonsense missense silent
What would be the charge of this peptide, Asn-Arg-Met-Lys-His-Pro-Trp-His-Thr-Tyr-Ser-Gly-Glu-Leu-Val-Trp, at a pH of 1 and a...
What would be the charge of this peptide, Asn-Arg-Met-Lys-His-Pro-Trp-His-Thr-Tyr-Ser-Gly-Glu-Leu-Val-Trp, at a pH of 1 and a pH of 11?
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?
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?
Suppose your employer offers you a 2% raise. What would be the consequences if inflation were...
Suppose your employer offers you a 2% raise. What would be the consequences if inflation were less than 2%, exactly 2%, or greater than 2%?
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT