Genetic Analysis: An Integrated Approach (3rd Edition)
3rd Edition
ISBN: 9780134605173
Author: Mark F. Sanders, John L. Bowman
Publisher: PEARSON
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Chapter 8, Problem 24P
A full-length eukaryotic gene is inserted into a bacterial chromosome. The gene contains a complete promoter sequence and a functional polyadenylation sequence, and it has wild-type
a. List at least three possible reasons why this eukaryotic gene is not expressed in bacteria.
b. What changes would you recommend to permit expression of this eukaryotic gene in a bacterial cell?
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A full-length eukaryotic gene is inserted into a bacterial chromosome. The gene contains a complete promoter, a wildtype nucleotide sequence and a polyadenylation sequence. However, the gene does not produce a functional protein.
Students may submit their answers as bullet points or a table to facilitate grading.
Part A: List up to five reasons why this gene is not expressed in E. coli.
Part B: What changes do you recommend that would facilitate expression of the eukaryotic gene in E. coli.
A full-length eukaryotic gene is inserted into a bacterial chromosome. The gene contains a complete promoter, a wildtype nucleotide sequence and a polyadenylation sequence. However, the gene does not produce a functional protein.
Part A: List up to five reasons why this gene is not expressed in E. coli.
Part B: What changes do you recommend that would facilitate expression of the eukaryotic gene in E. coli.
A full-length eukaryotic gene is inserted into a bacterial chromosome. The gene contains a complete promoter, polyadenylation sequence and a wildtype nucleotide sequence. However, the gene does not produce a functional protein
List four reasons why this gene is not expressed in bacteria
List five changes you recommend that allow expression of this eukaryotic gene in bacteria
Chapter 8 Solutions
Genetic Analysis: An Integrated Approach (3rd Edition)
Ch. 8 - Prob. 1PCh. 8 - 8.2 In one to two sentences each, describe the...Ch. 8 - 8.3 Answer these questions concerning...Ch. 8 - 8.4 The diagram below shows a DNA duplex. The...Ch. 8 - The following is a portion of an mRNA sequence:...Ch. 8 - Compare and contrast the properties of DNA...Ch. 8 - The DNA sequences shown below are from the...Ch. 8 - Bacterial and eukaryotic gene transcripts can...Ch. 8 - Describe the two types of transcription...Ch. 8 - What is the role of enhancer sequences in...
Ch. 8 - Prob. 11PCh. 8 - Draw a bacterial promoter and label its consensus...Ch. 8 - For a eukaryotic gene whose transcription require...Ch. 8 - Three genes identified in the diagram as A, B and...Ch. 8 - Prob. 15PCh. 8 - 8.16 The segment of the bacterial gene involved in...Ch. 8 - Prob. 17PCh. 8 - Prob. 18PCh. 8 - 8.19 A DNA fragment from the end of the mouse...Ch. 8 - 8.20 Wild-type E. coli grow best at but can grow...Ch. 8 - A mutant strain of Salmonella bacteria carries a...Ch. 8 - 8.22 The human wild-type allele and a certain...Ch. 8 - Prob. 23PCh. 8 - A full-length eukaryotic gene is inserted into a...Ch. 8 - The accompanying illustration shows a portion of a...Ch. 8 - DNA footprint protection (described in Research...Ch. 8 - Suppose you have a 1-kb segment of cloned DNA that...Ch. 8 - Assume that a mutation affects the gene for each...Ch. 8 - 8.29 The DNA sequence below gives the first base...Ch. 8 - 8.30 Genomic DNA from a mouse is isolated,...Ch. 8 - 8.31 A portion of a human gene is isolated from...
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- A mutant strain of Salmonella bacteria carries a mutation of the rho protein that has fully activity at 37°C but is completely inactivated when the mutant strain is grown at 40°C. a)Speculate about the kind of differences you would expect to see if you compared a broad spectrum of mRNAs from the mutant strain grown at 37°C and the same spectrum of mRNAs from the strain when grown at 40°C. b)Are all the mRNAs affected by the rho protein mutation in the same way? Why or why not?arrow_forward. Another class of suppressor mutations, not describedin the chapter, are mutations that suppress missensemutations.a. Why would bacterial strains carrying such missense suppressor mutations generally grow moreslowly than strains carrying nonsense suppressormutations?b. What other kinds of mutations can you imagine ingenes encoding components needed for gene expression that would suppress a missense mutationin a protein-coding gene?arrow_forwardYou are teaching a class on the regulation of eukaryotic gene expression. In order to demonstrate this complex process, you decide to draw for the class a typical eukaryotic gene/transcription unit with its major regions, such as the promoter regions, where the RNA polymerase II and transcription factors would bind From the list given - choose all components that you think are part of a typical eukaryotic gene From the list given - choose all the regulatory sequences that you think would control the expression of this eukaryotic gene From the list given - choose all of the regulatory proteins that would bind the eukaryotic gene to control its expressionarrow_forward
- When the amino acid levels in eukaryotic cells are low, general protein synthesis is reduced. Gcn4 translation, however, is increased. A. Why? B. In general, what is the mechanism by which Gcn4 levels are increased? C. What would happen under high and low amino acid conditions if only one of the upstream ORFs were deleted from Gcn4? D. What would happen under high and low amino acid conditions if all of the upstream ORFs were deleted from Gcn4?arrow_forwardWhen a region of DNA that contains the genetic information for a protein is isolated from a bacterial cell and inserted into a eukaryotic cell in a proper position between a promoter and a terminator, the resulting cell usually produces the correct protein. But when the experiment is done in the reverse direction (eukaryotic DNA into a bacterial cell), the correct protein is often not produced. Can you suggest an explanation?arrow_forwardname TWO mechanisms of control of gene expression that are only used by eukaryotes and discuss why each of those mechanisms wouldn’t be possible in prokaryotes.arrow_forward
- You are interested in studying a novel gene that appears to be involved in cancer. There is no information about the function of this gene. What would you do to obtain the cDNA for this gene? How would you express this gene and what expression systems might you utilize to study its function and why? How would determine the subcellular localization of this gene in eukaryotic cells? What are alternative methods in case one doesn't work? How would you purify and determine the 3-dimensional structure of this protein?arrow_forwardA strain of bacteria possesses a temperature-sensitive mutation in the gene that encodes the rho subunit. At high temperatures, rho is not functional. When these bacteria are raised at elevated temperatures, which of the following effects would you expect to see? Explain your reasoning for accepting or rejecting each of these five options. a. Transcription does not take place. b. All RNA molecules are shorter than normal. c. All RNA molecules are longer than normal. d. Some RNA molecules are longer than normal. e. RNA is copied from both DNA strands.arrow_forwardA strain of Arabidopsis thaliana possesses a mutation in the APETALA2 gene. As a result of this mutation, much of the 3′ UTR of the mRNA transcribed from the gene is deleted. What is the most likely effect of this mutation on the expression of the APETALA2 gene?arrow_forward
- Assume that there is a double stranded break on DNA double helix of an eukaryotic cell due to X-ray radiation and it is not repaired. In addition, the cell’s Apaf-1 protein is not expressed due to a null mutation in the Apaf-1 gene. Please discuss the effect of not having Apaf-1 expression in the cell with non-repaired double stranded break.arrow_forwardUpon identification of the DNA regulatory sequence responsible for translating a given gene, you note that it is enriched with CG sequences. Is the corresponding gene likely to be a highly expressed transcript?arrow_forwardWhat are the functions of transcriptional activator proteins and repressor proteins? Explain how they work at the molecular level.arrow_forward
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Bacterial Genomics and Metagenomics; Author: Quadram Institute;https://www.youtube.com/watch?v=_6IdVTAFXoU;License: Standard youtube license